I would go with one of the Bosch 800 series. 44 dBA. Bosch is known for making extraordinarily good dishwashers that are quiet.

Bosch and Miele both seem to have the best reputation compared with others. I've had both and prefer the Bosch but I think either would be a good choice depending on what features are important to you and how much you want to spend.

I think both are good but I have always owned Mieles. Go to a showroom and look at the new models with all the bells and whistles. See which one calls out to you. I don't think you can go wrong with either. My last Miele lasted over 14years with 2-3 runs a day. I upgraded to the Knock20 model and like it just as much as my older one. I loved the bottom rack in the older model though and the I wish Miele would bring it back. The new racks are more flexible but different!

Good luck!

So this is my current 800 Bosch series from 8 years ago which I am replacing 24' Evolution 800 Plus Series Dishwasher SHE68E15UC.

I went through several repairs, and all the plastic shelving dividers broke, do you find the currrent model ones are more durable?

how does the quality of the interior of a current 800 series Bosch compare to a current Miele?

I had a mid range Bosch for over 10 years in my old house. I'm looking a the highend Bosch as well (I need a water softener feature). The Bosch Benchmark I was quoted was $200 higher than the Miele with similar features. Definitely look at both because I'm now considering a Miele just because it's in the same price range (they used to be about $1k more). I was just really surprised.

Like Heather, I, too, was surprised to find smaller price differentials between the two brands. I happened to be shopping for a replacement DW a couple of months ago. This was just as Bosch and Miele were releasing their updated model lines. I mention this because (at least, in my area), there have been deals offered on warehouse stock and floor models which may be worth considering, particularly if you are interested in a Miele.

For your question about potential differences in the quality of the interiors of the two brands' models, I would say that Bosch models I saw all had nylon racks and parts much as the Miele models did. Miele's racks are designed to provide loading flexibility with few movable tines, etc. The new Bosch models' racks seemed to be a bit lighter in construction and seemed to have even more moving parts than they used to have. Because of that, I second homepro's recommendation to take some of your dishes and
etc. down to a showroom (or showrooms). See how your things fit and whether you like
or dislike the loading patterns for the models you are considering.
Like 3katz4m3, I found I slightly preferred the Bosch models' layout. But that is very much personal preference so YMMV.

You mentioned that your 8 y.o Bosch had developed leaks and asked if the latest Bosch models are more durable than your old one. That seems hard to judge. My original bottom-of-the-line Bosch DW lasted from the 1990s to 2011 with the only work being replacement of a worn latching release spring for the detergent dispenser. I bought a new DW when the control panel burned out and replacements were no longer available. The new DW was a Bosch 500 series model. It developed cracks in the plastic pump and sump housings this March just after the five year warranty ran out. The parts assemblies seemed very expensive and the replacement process seemed (to me) onerous enough to make me look at a new DW. I can say that, to my eye when shopping back in March, the new Bosch models did look better to work on than the ones from five to eight years ago. Whether that makes them more durable is hard to say.

Miele DWs have a longstanding reputation for being built like tanks and there is the company's vaunted mantra of "designed for a 20 year useful life" or "7500 cycles." That is an admirable yet aspirational expectation; Miele's extended warranty is only five years. (Canadians can sometimes get 10 year extended warranties from Miele.) Some posters here have had Miele dishwashers last for a long time, but some have not.

An additional consideration from previous threads on Miele DWs is that you probably will not need service, but if you do need service, you want to be sure that Miele factory service is readily available where you live as opposed to dealer coverage which may not be as good.

One small thing of possible note: if you want a smudge resistant
stainless steel finish on the exterior, Miele DWs had it and the Bosch
ones did not, at least when I was shopping in March.

On cleaning performance, I cannot speak directly to the abilities of the current Benchmark and 800 series because I bought one of the new 300 series models. What I can say is that the new 3-rack 300 series model takes about 15% longer to run a full cycle than its 500-series predecessor did, but does an excellent job. One difference between the machines is what Bosch calls a "Clean 30" cycle. So far, for me, the new DW's "Clean 30" cycle (which I now use frequently) has worked as well as the standard long cycles on its predecessor.

ETA: Although the cycle is called "Clean 30," the timer display always shows it taking 38 to 40 minutes on my unit. I suspect you would see the same with the new Benchmark and 800 series models.

As best I could tell when shopping, the higher level Bosch models offered those and additional cycle choices, additional rack flexibility, and, as Heather noted, there were a couple of the more expensive models that also offer built-in water softeners. Before starting out on my shopping trip, I had read some older posts here saying that Miele offered an automatic water softening system. Don't know if they still do that but the Miele model I saw when shopping (a "Crystal") required testing water hardness and programming the water softener much as the Bosch ones do. If memory serves, the price of that Miele was less than the Bosch Benchmark with the water softener (at least on that day). It also offered the end-of-cycle auto-door-opening feature which enhances final drying. I passed on it mainly because the cost was over my planned budget and our town's water is not all that hard.

And a final FWIW : even the new Bosch 300 series models are rated at 44 dBA for quietness. Some of the Benchmark models are even less. The low-to mid range Miele models that I looked at were rated at 46 dBA as was my previous Bosch 500 model. The 2 dBA difference seems negligible to me.

One further additional comment: from Heather's thread on ovens and dishwashers, I just learned that Bosch is now offering a 300 series model with a water softener priced at just under $1k.

Definitely look at this model!

The new Bosch 300 dishwasher has a water softener and it's on sale at Best Buyfor $990.00. Reviewed.com tested the new Bosch 300 dishwasher so you can read the article if you're interested. Bosch also added a 3rd rack for silverware and utensils to the 300 so the price is higher than in previous years.

>> The 2 dBA difference seems negligible to me.

https://pulsarinstruments.com/blog/how-to-understand-the-3db-rule/