I purchased a pair of older B&W DM640i's with an eye to upgrade in the near future. I'm somewhat of an audiophile neophyte, but have been trying to invest in good yet moderately priced equipment. I jumped on good deals on an Aragon Soundstage (w/Audio Research balanced cables), Audio Research 100.2 SS Amp., Rotel RCD971 CD Player. I was all set to upgrade to the something in the Nautilus line until I heard the JM Lab Electra 926 (at my B&W dealer's store) on a pair of Rogue 100 watt tube (non-magnum) mono blocks and was blown away! My dealer, a loyal B&W retailer for years, doesn't sell JM Lab YET, he had just received 2 models to test the waters, the 926 that retails for about $4,000 and another (model #?) that sells for around $1,500. He's seriously thinking about making a switch and is convinced that B&W can't touch the JM Lab in the $4K-$5K price range. Is he right? I haven't heard the Nautilus 803 ($5K), but I have heard the N802 ($8K) and while it sounded a little more detailed and slightly fuller than the JM Lab, for my buck, it didn't sound $4,000 better! I'd simply like to get you guys' thoughts and opinions as to how the N803 would stack up against the JM Lab 926 or any serious challenger @ $4-$5 grand. I listen mostly to acoustic jazz like Diana Krall (80%) and HT (20%). Is my AR 100.2 able to drive more upscale models? My room is 20'x30' w/10' ceilings and due to a fireplace, my speaker sit about 18' apart. I also use a Paradigm PS-1200 powered sub. Any recommendations on upgrading would be appreciated.