Go with a couple of Mmats Dreadnauts, they are supposed to have great SQL and they're 1000 RMS or right at it. You could also look into some HD3's or 3515's although both could use more power.
atomic quantums 1k rms and they get down trust me and they have decent sq they have some amazing power handling we burped it at 4k and didnt hurt it until we did bass boxing on 5krms
- right now i have mine tuned 34hz & it shakes some serious sh1t