Hey there. I'm looking to improve in the amplification department, and I'm interested in getting some kind of stack to replace my combo. However, it's not as though I can just plug in and pick my favorite - there's a lot of choice between heads and cabs, and which sound good together. Any tips or suggestions on choosing a good first rig? I'd be interested in getting something less than 200 watts to start, so what should I look out for? Thanks.