best solid state integrated to match with B&W 685s

The Peachtree Decco is a great place to start and they're beginning to show up used for less than $500. The built-in DAC is quite good and when your budget is less pushed to the limit you can add any amp you want and use the Decco as a DAC and preamp. It's not the last word in build quality but a great bargain and its flexibility makes it an excellent centerpiece for a system you plan to upgrade.

Bob_reynolds - can you expand a bit on these two things - bass management using pre amp out and main amp in, how is this wired, and what do you mean by high-passing the B&Ws? Does this mean only amplifying the high frequency speaker terminals, and using a sub for the bass? Can you recommend a decent bass management unit?
Thanks for all the responses.
Mst - I auditioned several speaker sets in the showroom, was really itching to buy, and the B&Ws look really good with the grills off - better than all the others IMHO. I am an architect and thus place probably too much emphasis on looks...

How about an older Classe integrated like the Cap-101 or a Plinius 8100?

Classe CAP 101 cannot separate the amp from the pre outs, does that limit my ability to properly manage the low end frequencies(?), check out Bob_Reynolds post above.
The B&Ws are very good in the mid and high ranges, very detailed, but fall short on the low end. I think I am to insert a bass management unit somewhere in the signal path, not quite sure yet, and add a sub. I have seen this suggestion to manage the low frequencies with a separate unit before, just not sure how it works yet, or how much $$$.
Have not read up on the Plinius yet, and thanks alot for the suggestions, Mattybumpkin, makes for very interesting reading in the forums and reviews. I will keep researching these two units.

I think Bob is saying that you would have a set of pre-amplified RCA jacks out of the back of the integrated, and that you would connect those to your amplified subwoofer's RCA inputs. You would do a one-time balancing of volume levels between the speakers and sub by adjusting the volume control on the subwoofer itself, and then control overall system volume for regular use (both the sub and the speakers) with the main volume control on the integrated. A Radio Shack sound level meter comes in handy for the balancing act.

As for Cambridge Audio gear - there is nothing at all wrong with it, I have a Cambridge CD player I like very much. I just prefer the more powerful Creek, the Music Hall and the big NAD's to that particular Cambridge or the smaller NAD you suggested for your stated musical preferences.

You mentioned AA has CA gear on sale, that is because CA has a very rapid product cycle. If you can stretch a bit, the deal of the week is the Cambridge Audio Azur 840A amplifier for $899 on AA website. If this is the 840A v2, then it is a much better amp than anything mentioned in the thread to this point, and like the big NAD, it has preamp outs that could be used to drive a subwoofer.

PS - I totally get your aesthetics thing, I have to have all gear that is at least the same color black, if not exactly the same size, brand and logos. That is why I didn't choose NAD gear at one point - because it was gray!

PS2 - one last thought, the $799 (black) NAD C-355BEE is pretty close to the C-372 in terms of sound quality, and would very likely work well with the 685's in your small space, but at $899, the Cambridge 840A is a lot more amp for the money.