cant go wrong with treo the best subs on the market right now thats my 2 cents
ORION will always rule in my opinion, course I come from the age of bass.
i have 2 13" JL W3's on a JL 500/1 amp and it is more than enough for me. it littlerally takes my breath away on some songs. i have also yet to hear them bottom out.
get 3 mtx 15" 9500's withe their biggest amp and ull be set. fosgate and alpine are also good
I've had really good luck with RE and Incriminator Audio
as long as the sub is in the right box and the right air space any sub will sound as good as the other ...i used to have some cheap as aura speakers and a memphis mono amp and they sounded damn good cause they were in the air space they were designed for..and then also you gota chose your box personaly i hait ported boxes...i think the bass sounds loads better with a sealed box and you can get lower hiting bass in a seal box...like comps they use a seal/ported box kinda like a bandpass box but bigger scale
Jl Audio, or Resident Enginering...
Ive been killing my JLAudio w7 since 2002...i mean killing it...and it still knocks and sounds clear. I'll never own a different sub...
Diamond audio, image dynamics, RE audio, then behind them jl audio
ive put cerwin vegas in all my trucks.. There a really nice sub