I picked up a Sony Sen-R6500 speaker system at a GoodWill the other day. The system consists of a Sony TA-E741 Amplifier, powered 270W Sony SA-E651 Sub, Two 240W Sony SS-U651AV floor speakers, A 66W Sony SS-CN64 Center speaker and two 50W Sony SS-U64 Rear speakers. The speakers all hook into the Sub and from there go to the Amplifier. Anyway I was wondering if I got rid of the Amp and got a Onkyo Receiver like the TX-SR307 or TX-SR507 and hooked the speakers to that. Would it be better (in terms of sound quality) then buying an Onkyo Home Theater System like the HT-S3200 or HT-S5200? Thanks. Pics included, the second pic is of the back of the sub.