This one, although a litlle over the budget...
http://www.crutchfield.com/S-PT7oqg5...0&I=500MRVF340
or, this one:
http://www.crutchfield.com/S-PT7oqg5...08R7540A&g=120. I've never listened one of these, but after the specs, it seems like a good deal, except there's a litlle thing that bothers me with it. They say it requires a 8 AWG power wire, but after the specs it would be a 4 AWG... Oh well...