I don't have this particular sink but this one appears to be one of their hybrids - built to be either drop-in or undermount.

I have the gray sink in a double bowl. I LOVE it.

Here is a link that might be useful: same sink?

As I've told others who ask about these deeper sinks, I've learned from personal experience that there is an installation nightmare with these sinks if you plan on having a garbage disposal in the single hole drain. You have to be mindful of the height of your waste drain in the back of the sink cabinet. If the garbage disposal is too low because of the deeper sink your waste drain won't function properly. A word to the wise - have a professional plumber check the situation out BEFORE you buy a single basin deep sink.

jB

I do not agree with Jb1176 about deeper sinks being an "installation nightmare". I have a 9" deep single-bowl rectangular sink with offset drain and a large Waste King batch feed disposal (batch feed disposals tend to be larger than continuous feed disposals). There was no problem whatsoever installing it, nor in its daily use. As JB said, you need to check that your plumbing outlet will be lower than the outlet on the disposal for drainage. You don't have to pay a plumber to check this - just look online at the specs of the disposal you want, and also make sure you include the thickness of your countertop when adding it to the height from the top of the disposal to the disposal's outlet. Also, Insinkerator makes a compact disposal for those who do not have a lot of room under their sinks.

As to your two choices of sinks in your posting, I do not have either one, but I have read quite often on this forum of people undermounting sinks like that Blanco Diamond 511-653. Furthermore, the Blanco website says specifically for that model, "ideal for both drop-in and undermount installations". The two sinks seem to need different size cabinet bases (33" and 36"), so make sure you have included that factor in your decision. Both sinks have the offset drain feature you like, although the Precis drain is offset in the rear center, but that still means you can set pans down in the sink without covering the drain since it is offset. Another consideration would be that, aesthetically, the Precis model is very contemporary, while the Diamond 511-653 could go in either a contemporary or traditional kitchen.

BTW, you linked the 511-653 at Home Depot where it costs $476, not including sales tax. At Homeclick.com, where you've linked the Precis sink, that 511-653 is selling much lower, for $308, free shipping. I've linked it below.

Here is a link that might be useful: Blanco Diamond 511-653 at Homeclick.com

http://www.shower-faucets.com/511652.html?gdftrk=gdfV2224_a_7c266_a_7c722_a_7c511652

This link shows a pic of the same sink and says undermount. If you do a search: Blanco Diamond Super Single Bowl Undermount you should be able to find the ones with the drain off center.

I have the super single and another Blanco in my kitchen and love them.

akchicago,

All I can tell you is that we wanted a sink similar to OP. When I asked the plumber about using this sink he checked the height of the waste drain and said it would have to be lowered if we were using a garbage disposal. That meant cutting out the back of the cabinet, cutting out the dry wall, lowering the waste drain pipe, and closing up the wall again. The cost to do this was prohibitive and we went with another sink that wasn't 9-1/2'' deep.

The center of our waste drain is about 16 1/2'' from the finished floor. Our cabinets are the standard 34 -1/2'' tall. The granite is 1-1/4'' thick and the sink was 9-1/2'' deep. The sink would have been undermounted under the granite and the rim if the sink was at the height of the top of the cabinets.

All I can say is that the plumber said the disposal wouldn't drain properly without the waste drain being lowered.

Thanks all for you input...I know that the Blanco Diamond Super Single Bowl calls itself an "undermount" - but if you read closely, you have to buy special clips to make it work as an undermount, and on some web sites, they call the same sink a "drop-in" that can be used as an undermount...basically, our plumber and GC did not consider it an undermount, due to the deck on the back (i.e. toward the faucet) - they also felt it would be more difficult to install cuz of having to add extra holes for soap dispenser and water filter - although I see on the web sites that they'll drill them for you - at any rate, they felt that we should get the Precis, which is a "True" undermount...

I'm okay with it, but I do like the look of the Diamond and the off-center hole better. I will definitely double check with them about the disposal.

And thanks, ak, for the keen eyes on the cost differential -I was aware of that, but last night it was late and I just cut and paste the link from Home Depot, which was open. Still appreciate your trying to save me some bucks!