Lots of detail, great imaging, not much bass?

Oh, add to that short list 3a mm decapos. As you can see my budget is increasing. Lets just say $1500 or less!

How good is the guys hearing? Maybe Totem Hawk or I do like the Silverline. Verity Tamino but I haven't seen them used in a year or so. Never heard the decapos but I think I'd like them.

Now you are in Green Moutain Europa territory...good place to be

At the Newport Audio show the Silverline Minuets were displayed right next to the Prelude Plus models and though I only heard the Preludes, if the MInuets can play anything like their bigger brother, then your search has narrowed down quite a bit.

All of the Totems I heard at the show did nothing for me, but most rooms didn't sound that good, save for a few. In fact, stuff that I know sounded good last year didn't hold up that well this time.

The one room that completely floored me was the Pioneer room. Yes, the Pioneer room. This small floorstander was designed by Andrew Jones (think TAD)
http://www.pioneerelectronics.com/PUSA/Home/Speakers/Home+Theater+Speakers/SP-FS52
and had no right to sound as good as it did. Sure, it didn't do everything but they were musically satisfying and made me wish they were around when I first started this hobby.

All the best,
Nonoise

Now that you've upped your budget I think a used pair of Joseph Audio RM7XLs would be very worth consideration given what you're looking for.

Also, I don't think tripling the wall thickness will do much for your bass problem although it may help a bit with the mids and highs (especially if you use something like green glue between the layers). The walls will still be attached to the studs, which will still vibrate with the bass and transmit to the wall on the other side. Plus, depending on construction the beams in the floors and ceilings will also continue to transmit bass to the other room. Unless you're willing/able to install something like resilient channels in your walls and, significantly more difficult, also isolate the floor and ceiling I don't think you'll be able to attenuate the bass transmission enough to allow you to crank the music very loud if it contains significant bass. Sorry to be a bummer but that's my understanding of it and don't want to see you waste $$$ on something that won't work, but maybe others have suggestions.