So I've been learning bass with a cheapo 30 watt combo for a while. I am about to start playing with a worship band (rock/contemporary styles) and need something that can fill a room. Our room is an old converted theatre that seats probably around 200 people or so. I am basically looking for a single cabinet and head and have been thinking a 1x15 would do the job with a good head. I use my B string a good bit and want to make sure I get the good rumble out of it, but also want something that will make the highs sound good as well. I don't care so much if it's used or new, as long as it has good tone and is reliable. My budget's probably only about $500 or so (which seriously limits me, but stuff happens) and I basically don't know much about amps. Silly me, spent too much time learning to play the actual bass Any advice anyone can give would be helpful.. I'm taking the day off tomorrow to go shop (I'll need something in my hands in the next week or two) and would appreciate some input. I know anything will knock my socks off after playing a cheap 30w combo for a couple months, so I want to be careful not to get screwed.