I’d suggest Phonic if you’re looking for good powered speakers that aren’t very expensive. I think they’re a very underappreciated brand. JBL & Mackie are going to cost you. You might get a good deal on Samson or EV (ElectroVoice); if so, I’d definitely grab it. You’re almost certainly going to have to buy used if you’re on a major budget. Craigslist Is Your Friend.
do you have any construction skillz? if so check out bill fitzmaurice…its the dj tech tools site for diy speakers. superior sound for a fraction of the cost.