I have a peavey microbass, it ain't great but it works, problem is, it can't really play with a drum kit and i sort of need to be able to do that. Possibly use in small venues nothing large, features are more of a bonus than anything else, looking for good allround high quality sound, which can play against a drum kit and 1 or 2 guitars without much distorting. I'm looking in the £175 - £250 range, should i be looking at a combo or a head ==> Cab combination. I don't really know much about amps at all, so really just some advice about what i should be getting. Did a search the ,Ashdown Electric Blue series looks good, how much difference would there be between a 12" and a 15" speaker though for the same power?