If undercounter installation is important then it's the Miele.

Are you hoping someone around here will tell you it's OK to put the GE down low and then you'll feel better?

This is America , so you can pretty much do as you please - so if you really want to put the GE under the counter then do it. It's not illegal, you will just have to bear the responsibility of using the product not as it was intended.

Well, just in case anyone else is researching the same thing, just found out GE says the 27 is not insulated as well as the 30 and therefore they cannot bless use under a counter. That's what the appliance salesperson (who talked to GE) called to tell me.

Our Miele Speed Oven was installed Friday,so I have Minimal real life experience yet. I think a major question is how do you intend using it? Primarily as a microwave? To speed cooking up some? As a true second oven?

Yesterday morning I made blueberry muffins. A pan of 12 fits perfectly into the Miele Speed Oven and it bakes as a true convection oven, excepts it preheats quicker than a full size oven. Saturday night I used it to make baked potatoes - 30 minutes without the microwave texture - but perhaps not quitre as good as a potato that cooks a full hour in a regular oven.

For us baking was the key - and true broiling - so it was the Miele.

(Although I did get "caught" a bit Saturday night when I had the potaotes baking and wanted to use a microwave to do a quick butter melt. I had to wait until the potatoes were done, and then think carefully about what to put the butter in as the oven was 400 degrees. Adjusting will take a little getting used to - makes me wonder if I should keep our regular microwave hooked up in the laundry room.)

dewesley, your experience was very helpful!

Having this as a second oven (and electric, and small, and Miele) since the first oven will be gas, and large, is very important.

But I have wondered if there will be conflicts between oven and MW usage. I am sure I will learn to work with it as you are doing. I really want the old MW off the counter.

It's worth it getting the microwave oven off the counter. When it comes to which one to choose, I would be sure to be looking at the voltage. You want to get something with 240V. After that it would be a comparison of features. I like having a broiling element available and a broiling function built in to the oven. If the Advantium has it and you don't mind risking Antss's gloating you to distraction if you set your house on fire with it then save the dough. But I was pretty intent on the Miele after I saw it paired with my coffee machine.

sayde, I know that you are going down the same path as I for the past few months.

I will be using my Miele speed oven exactly the same, under the counter. I will also keep 30 inch all gas 10 year old Viking in the kitchen. I ruled out the Electrolux speed oven because it cannot be mounted under counter.
I looked at KA MW convection oven and Advantium. I felt that the oven features in both were not nearly as compelling for me as the Miele. The price difference was not that much with the Chef Oven (the Master Chef was more, as you know)

The clincher in the appliance selection for me was the "look". I want really flush mounted appliances. I don't want anything to stick out 1/2 inch to 1 inch from the adjacent cabinets. I am spending a fortune on my modern slab cabinets with grain matching veneer. I really want that sleek look. Unfortunately, American appliances do not deliever that look. I am not sure why they can't make it happen, but they don't...

I am keeping my 10 year old Viking because it is cobalt blue and I love the color. The Viking will stock out a bit. Oh well. I was very tempted to replace it with an induction top and an Euro oven for the look and "increased" functionality. (5 to 8K price difference stopped me!) I decided to put the money into the integrated frig. I am getting Thermador freedom column for the look.....

If you are not sure what the integrated look is, go look at the Miele web site. All of their appliances are at exactly the same front level as the adjacent cabinets. They don't stick out at all. Between the appliance and the cabinet is only 1/16 to 1/8 inch space, as would be any well hung frameless cabinets should be. If you panel the Miele DW or frig, you would never know that anything is behind it.

Hope this helps.

kaismom, thanks for your post! Really helpful as this unit -- and I've pretty much decided to get the Miele Chef Speed Oven -- would be next to the dishwasher-- currently a Kenmore Elite. We're trying to decide what if anything to do about that. As you pointed out, the DW does stick out a little. Another factor -- all the new Miele have "clean touch" stainless steel -- no fingerprints -- nice, but -- does this mean that it won't look right next to a SS appliance from another manufacturer?

It is interesting that you are drawn to Miele for the sleekness -- while in my kitchen, which is kind of the opposite vibe from sleek (re-stored antique gumwood cabinets, soapstone, Blue Star -- you get the picture ) I'm thinking Miele will look too sleek. The looks of a KA or Viking MW would fit in better than the Miele, truth be told.