I just got an AVR300 and was shocked at how good my Tannoy Reveal monitors sounded. I have used my Reveals with all my stereos including my Tandberg/Threshold system and had no idea they could be so transparant. I bought my reveals on ebay for about $200 a pair, with the center channel costing aboutj $325. I have also owned the B&W DM series monitor and it didn't come close. I would also recommend PSB. I have a pair of PSB's that are entry level in price but in some ways outperform my Sonus Fabers.
