since you like b&w...
you may want to look at the new 705 series. this speaker, which looks much like the 805, actually goes down 10hz lower to 46hz (not sure what this means specifically, although im sure others here can tell you, it does mean substantially lower). They are also about a grand less! When i auditioned these i was quite impressed with the bass quality and could not personally tell the big price difference in sound. Also, with the saved money you could look into a REL subwoofer that , IMO, would highly compliment the 705's. But, to agree with topspeed here, i think you outta look at the VR-1, since i could not believe the incredible heart-pounding bass produced by such small bookshelves. The vinishes on the Von Scweikert are also beautiful!! Most definitely wife-pleasing. I have yet to hear Audio Notes, but i know that RGA really likes them
One other thing to consider is that B&W tweeters on both 805 and 705 are meant to provide a wide dispersion - setting them in cabinets will more than likely hinder this feature. You may want to definitely do an "in-home" test to know for sure if you still like them.