I want to add a cabinet to my 200 watt, 2x10" Yorkie combo and can't decide between another 2X10" or a 1x15" cab. I play rock mostly, and have a MIM Fender P with a Basslines quarter-pound P-bass pickup in it. I'm looking at the GK backline cabs to do the job (both rated at 200w, I believe), cause I don't have much $$$. What do you think? Thanks.