Hello, I know the topic gets asked over and over again, but Ive been looking at many sites trying to understand the specs about receivers. Im still not certain about what are good values when looking at specs. Im getting started at looking for an A/V receiver but want to do my homework first so that I understand what Ill be buying. I know if I asked "Whats a good receiver in $$$ price range?" many of you would say none, so Im not asking something so vague. I am hoping I can find a bargain or sale at around the $300 mark, less is always better if the value is still there. Ive looked at different specs for Onkyo, Yamaha, and Denon receivers, but I dont truly understand the differences. I know there are different numbers of input/outputs but the speaker ranges are what I dont have an understanding of. I found this an ONKYO TX-NR509 on Newegg and I'll use it for an example (not a "Should I get this?"). For the important specs like power output Ive read that 8 ohms is pretty much standard and is something to look for. 6-ohms requires more juice to power the same volume. This unit has measurements for 8 and 6 ohms. Is that for the speakers that will be connected to it? Ive read that 20-20,000 Hz is the range to get too, but I dont know the difference between that and 1 kHz, is it a trade off? I know its a good idea to find a receiver with a pre-amp out, is that for if I were to want an amp or is that for connecting a sub? Im guessing the latter. Also, I forget what the percentage rating is exactly, loss of clarity? But the lower the percent the better. My last question right now is that it looks like the mid priced receivers are mostly 7.1 systems. Im only really interested in 5.1. I live is a smaller home and our living room is about 14x14 so theres no need for 7 speakers. Are 5.1 mid priced (~$500) receivers still common or is it just 7.1 now? I did read on various sites that the side speakers arent necessary to have connected. Im looking to eventually upgrade from my Sony HTIB. I know they compromises of true quality in a box, but at the time it was perfect for my setup and still works well now. But I think Id really enjoy better sound to enjoy watching films. Oh, and I remembered another question I had. Some receivers have upscaling as part of the video to the HDTV, if my DVD player already upscales is there any conflict? I would imagine not. Perhaps the benefit of an A/V receiver that does upscaling could be for my Wii or PS2. My TV is a 32-inch 720p, so its not at all necessary to upscale to 1080. I would really appreciate any help and information you guys could offer me. Im pretty decent with computers and TVs and the like, but sound is something Ive never gotten in-depth with and its tricky finding good sources of information. Thanks in advance!!