I've recently formed a very small garage band, and since it's my first band, I don't quite have all the equipment together yet. I need a bigger amp, for one. I want something that will do a nice growly bass justice, but nothing too big; it's just a garage band. My friend said that Hartke amps kind of give the sound of the lower keys on a piano, and to me, that sounds like it could translate into growl very easily. Would Hartke be the way to go, or is there a better choice?