Hello all, I've been jumping in head first into learning a lot of this. I have to make a decision, but first, let me list my setup. I have a Harman Kardon avr 247 7.1 receiver (lame wattage, seems well featured), 2 x rt2000p fronts, 2 x rt1000p sides, Rti70 rear (will be flipping to buy different rears, suggestions? rt55i?), and a csi1 (flipping, not a good timbre match for 2000p right?), and plan to add a Klipsch sub-12 for the hell of it. I know this is bad, but it's all I can do to have it all running, I'm currently splitting the rca sub-out to the rt2000p's, then out of the 2000p's to the 1000p's. I'm starting to think I need a receiver with 2 sub-outs? But ultimately, here's my question... should I upgrade the receiver to something like an avr 3650 (know that I'm very partial to the styling of the HK receivers, but worst case, will switch for the sake of greatly improved performance only) / if I could afford it, avr 7550, or should I get an/multi external amp(s)? or... both? I'm pretty limited on budget... probably $7-900... I ccouuuulllldd save more, but difficult to do so.I'm already working seperately to get matching timber center ($$$ cs1000p) and rear suggestions accepted, but ultimately, I need to know what to do about the receiver/amp situation. I have NO idea what to look for in amps, and what brands, and the differences between block and... well, whatever else... I'm not too familiar with the terminology... but I imagine the rt2000/1000p's would require external amplification... and know this, I'm considering 1000p's for the rears as well. please, any and all info/advice would be VERY appreciated, as I don't know entirely what I'm doing LoL.