I would go Shiva,Infinity,type R. Nothing against the type R you type R fans out there they are decent subs but its a hard choice between the infinity's and they type R's. I think they hit harder and sound a little better.
J.W... read up on the ascendant audio atlas 12.. ive been reading alot about this and a user posted that it has better sq than an idq and can easily push 500w (even tho its rated @ around 350)
