After having my car broken into and all my crap stolen, I'm starting to look at some replacement hardware. I aquired three MTX 10" subs in a custom sealed enclosure from a neighbor, and I'm asking your opinions on what would be a good mono amp to get to run these babies. I'm not looking for earth-shattering rock-my-licenseplate-off bass, I'm simply looking for something that will make them pound nice, deep, and clean!!

A friend suggested sticking around the 500-600w range (I used to have two kenwood 12"s running off a 800watt kenwood amp (kac-7201), and it sounded kinda shitty, but I believe that was partly due to the subs themselves (the tornados made the bass real short and hard)

Any suggestions? Also looking for an amp that has at least a little something that is aesthetically pleasing to the eye.
TIA