Unless the 602 is a steal of a deal (pun) I'd go with the newer series just because of fan noise, heat, and weight of the 602. I'm in no way saying the 602 isn't a good amp, just giving my opinion. Plus the 602 isn't rated for 2 ohm operation. The newer drive core series is. I run mine at 2 ohms just to get 775w to each of my subs. They have no problem playing loud and low. I do need a miniDSP and the mic to get the response flatter.