I'm currently using an Onkyo HTR510 6.1 receiver that came with my Onkyo HTiB. I've upgraded all speakers and the receiver is the only leftover piece. I'm running JBL Northride E90's, E10's, EC35, EC25 and a E250P for speakers. The Yamaha HTR-5740 can be had for cheap but other than Dolby PLIIx would this receiver be an upgrade over what I already have? Any help is appreciated.