I need a suggestion on a replacement amp...

My primary amp powers the in boat speakers - 6 Polk DB651s. I don't know it is is relivant, but I have seperate amps powering tower speakers (Kicker model M450.2) and amp (don't remember make/model but can go look if it's relivant)... The primary amp started going in and out around the end of the season and while it's easy enough to swap out, I am turning to my fellow Moomba'ers for a suggestion on the make/model to use. If there are any other pertinant details, just let me know and I'll post the answer.

Thanks in advance!

07 LSV