I am trying to find a moderately priced sub (~$250) that sounds good. I just bought a Onkyo TX-SR507, have an old set of Bose speakers & have been waiting to scrape together a few bucks to buy a decent sub. I have read a bit on here, and these are sticking out to me. So any opinions would be appreciated. These are by no means the only 2 I'm considering so all opinions are welcome. BTW-I'm not going to be able to get much more $ for a sub than that...so 'you should wait and buy such-and-such for $$$$$' really will not help. Thanks in advance!