thanks to everyone for answering so many questions, i have learned alot over the last month or so on here. my next level of education needs to be surge protectors. as i look at them, i feel the same way as with monster cables. there are really high prices and moderate. currently i have a 2100 joule rca surge protector($18). is this sufficient? i know that nothing really protects from lighting, but can power surges be greater than that? . i have a my receiver, dvd, tv, vcr, gaming systems hooked up currently. also, do i need a surge protector for my subwoofer, or is the built in fuse for that?