The 9500 is the best sub I've ever owned. Gets loud, plays low, and still sounds amazing. Pretty much the same as a w7. only 750rms? Thats alot of power. No it wont take as much power as say a kicker solo x, but its not an spl sub either.
To answer the original question, all of those companies make good subs.....any of their lines are good, except low end mtx, id stay away from that.