Cerwin Vega 215's are excellent for dance music and stuff like that. I don't know what the current version is, but they sell for like $600+. I wouldn't buy them used, as the types that go for this type of speaker certainly must have blasted the crap out of it. For an amp, maybe a Cambridge Audio 651 at about $700. It has tone controls, which you probably should have for a system like that. The only thing is, you probably want to play music pretty loud, which means you should look into a higher powered amp. It will mean you're going over budget, but there's no sense buying something you won't be happy with. Best of luck and hold onto your wallet.