If you believe Definative's marketing collaterals 'Bipolar Powered Towers' are the only way to go. I know that this company has won many awards for their speakers and they appear to be made with very fine engineering and components indeed. I also think using towers with w/ large powered low-ranging (sub)woofers built in and matched/optimized with the cabinet and other drivers is also a plus (w/ or w/o another separate subwoofer). There seems to be a movement towards using bipolar speakers throughout a 5.1 or 7.1 system. Will true two channel music suffer in such a widely dispersed (maybe muddier) soundfield? I really enjoy excellent music reproduction as well as the movie sound effects that 5.1 and 7.1 systems bring to life at home. My listening room is aprox 24'x24' with a high open-beam pine ceiling, thick walls, carpet over a slab, large windows w/ plantation shutters, and two openings into other rooms. I have pretty much narrowed my speaker choices down to possibly three makes: Paradigm Monitor 90P's/Studio 80's, Polk Audio LSi25's, or perhaps the Definative BP2000TL's - all with their matched separates and centers. I had thought of going 7.1 and having the side surrounds be bipoles and the backs foward radiating monos to pair with the mains for music - now I'm wondering if all should be bipoles??? Also, I have heard that the Paradigms w/ their emphasis on the NRC testing are very warm like many of the other 'European' makes. Would the Polks provide a little more brightness? How about the Definatives? I'm concerned because I will be using a Marantz 8200 (8300??) which is known as a warm sounding receiver - I don't want to multiply the warmth factor into muddiness! You all always want details so I hope I gave enough instead of too little! HELP! Please give me your own experience with these speakers and the all/most bipole environment in your own home!! PS: I know it's all up to my own ears etc., and will try to demo these setups once I get the Marantz, but I appreciate the vast amount of experience and real-world info on this board.