About to buy a pair of 704s as fronts as I gradually upgrade. Looking for a stereo amp to power them. I'll be using my five-year-old Denon (1802) as a pre-pro. Budget for the amp is approx $800 US/$1,000 Cdn. Room is 17 x 12. Music/Movies 60/40. Would love to hear some suggestions from B & W owners. Thanks.