I'm looking for a somewhat lightweight (I'm a smaller guy) bass amp for moderate volume rock. I am in a grunge/psychedelic/experimental trio. Our drummer isn't very loud compared to most hard rock or metal band and the guitarist/lead singer is a bit timid so I was thinking 200+ watts. My budget is $500 since being a college student doesn't leave a ton of money left at the end of every month. I hate my small Peavey amp because no matter how I EQ it, it is just too boomy and my Thunderbird needs to get its' signature growl through the mix. Any recommendations would be appreciated.