the dcon would be an excellent choice. They will get pretty decently loud with very good sq, all ssa products are designed to perform like this. The Infinity Ref 1262w is another very good choice and comes in right around $75. I have also had very good experiences with Boston Acoustics G1 series, those sell for about $75 as well but they don't get very loud if you run them sealed, the really like ported boxes. I'm on my phone so I can't look at the amp you posted, I'll check when I get off work but if it's 800rms, it will blow the **** outta that ab dx sub.