I have used a bunch of different brands in the past, but now I use 2 Monster AVS2000's, and 1 HTS5100. The AVS2000 was where there was a significant improvement in sound, not so much in detail, but more in openess, more depth. It was like the amps were able to finally breath. Giving your theater the power it needs is essential, and the AVS2000 will do this proper.The 5100 I use for my source components, RPTV, and Preamp (not with the amps since it chokes the power a bit) with very little difference in pic quality. It's mostly there for piece of mind. I'm not sure what your budget is, but I would suggest going with a line conditioner first, and later on getting a voltage stabilizer if you live in an area where your power dips low.
