Hey... I'm throwing together a small PA to use at my son's graduation party. I'm hoping to talk a couple of my friends into doing a little trio thing (guitar/vocals, bass, drums)...and inviting anyone else up who may want to jam. It will be outside, but probably no more than 50-75 people. I already have a litle Yamaha unpowered mixer, so I'm good there. I'm looking at getting a pair of powered speakers. I don't want to spend a lot of money, and while I'd love to buy some nice QSC's or JBL's, it's not happening. In fact I'll probably just turn around and sell everything once the party's over. Realistically I'm thinking $300-$500 for a pair....and I'm not opposed to used or reconditioned....and I prefer 15's While I've done a lot of research, nothing seems to jump out....and you can never know for sure if it's a real review or a "fake" one thrown in there to artificially praise or slam the product. I know, you get what you pay for, but I just thought I'd ask to see if anyone has any experience (good or bad) with any powered 15's. Here's what I've been looking at... Mackie Thump TH-15A's (I can get a brand new pair for $484) Behringer..probably either a pair of B215D or a B115D Alto TS115 Any recommendations?