I'm getting polk RTi4s for fronts and rears, CSi3 for center and Velodyne 8" subwoofer. I need help to choose the reciever. The Harman Kardon has a lower Wattage per channel ~ 50 in contrast to the Onkyo with ~85/ch. HOwever, Ive been seeing reviews that mention wattage is decieving and that the HK is very powerful despite its low advertised wattage/ch. please help, thnx