I just recently purchased M22's and VP100 for a surround sound system I am setting up. I currently have an Onkyo dolby digital 5.1 receiver(TX-DS777), and subwoofer(Velodyne CHT-8). In my new quest for higer fidelity I was wondering what one purchase would get me the most "bang for my buck" I was thinking maybe a stereo amplifier to drive the m22's I want to work on incremental upgrades with the end result having a system based on seperates and getting rid of the receiver.

Thanks in advance for any advice.