I own Nautilus 805s, and use a Rogue Tempest fed from a Rega Planet via Audioquest Python IC with a BMI Eel on the amp and Audioquest SA-40(silver) double runs on the speakers. I really really really love this setup. In my opinion, the 805 is a truly exceptional speaker, and I've had them for over 2 years. They are quite sensitive to placement and toe-in, but you can get great results just plunking them down, unbelievable results await those with lots of patience and time to mess around. Bass is their only real weakness, but come on, it's a 2 way bookshelf. I listen to lots of music, and the 805 is amazing. Imaging, soundstaging and true timbre are my most important factors, so you might feel differently. I would really like to try the Reynaud Trente, which is essentially the same speaker (external tweeter, 6 inch midbass) as the 805, but of course different cabinet and drivers and theories... Supposed to be excellent as well. Just a note on the Nautilus line, the 804s aren't nearly as coherent, but the 803 is soooo nice. Need a big room, though. I heard the Shearwater HR and while the mids have a really nice "organic" quality to them, I wasn't that impressed with soundstaging (especially compared to the Kestrels which absolutely disappear, but ultimately aren't as true to the music). Plus, they're time coherent, which means that you've got to be 7-8 feet away for them to sound right. I had a brief but torrid affair with a pair of Merlin TSM-SEs, which are a totally different animal than the B&W, but probably as good. They are optimized (in the bass) for a underdamped (tube) amp, so they actually produce more bass with a tube amp than with a ss amp. The sound is really natural (I wish my 805s could be fitted with some nice softdome tweeters), and overall, sound incredible, too. What's more, they are upgradeable (dontcha just love that? $$$). Ultimately, I found them to have more depth of soundstage, but less width, and imaging that was even more position/toe in sensitive than my 805. Plus, in my opinion, the standard finish looks HORRIBLE, however, the upgraded finishes are Porsche paint quality, really, really cool. Anyway, just my $0.02, good luck, and keep listening!!!