(Note: I put this in both the speaker and receiver forum since both are being discussed.) When I first started my home theater, I got the JBL Cinema Propack 600 HTIB package. It included a receiver, a dvd player, a sub, and speakers. Later, I upgraded the speakers to the NSP1 package and the subwoofer with two Sony SA-WM40’s (I did the polyfill mod on both). That’s where I’m at right now. I don’t know what my next upgrade is going to be. My room dimensions are 19 x 15 x 8, roughly 2300 cubic feet. I can only do one upgrade right now due to budget constraints, and another probably in around 4 months depending on circumstances. Right now I have four options: 1)receiver, probably either the HK 525 or Sony DA4ES 2)speakers, probably the JBL Studio Series or ???Axiom??? series 3)subwoofer, probably the SVS PC+ series or ???pb2+??? 4)dvd, but I’m satisfied with the picture quality. Not that important. I have both Sony subs turned to the 12 o’ clock position, which is enough and even at times too much. Looking at it from this perspective, the PC+ series is way overkill, and the pb2+, don’t even go there lol. But my mind keeps telling me it’s better to have too much then too less. Atleast I’ll know the sub will never be the system’s weakness. Is the difference that obvious since I have TWO of these sony subs? I really don’t know how important changing the receiver is since I assume the majority of the sound quality is from the speakers. But then I hear people saying how they changed receivers and all of a sudden their sound quality difference was like night and day. Am I missing something here? Here is the receiver: http://www.jbl.com/home/products/pro...R600&SerId=CPP It gets real hot when I’m playing my speakers real high, which is almost all the time. I’m scared it’ll blow up when I get higher duty speakers like the JBL studio series. Can everyone give me their thoughts on this matter? Thanks in advance.