My only amp right now is a PJB super flightcase which I love, BUT I very occasionally have a gig where I'm pushing that a little harder than I want to. I expect I'll still just use the PJB for my upright but I have one job where I start on my Eminence and then switch to slab for the later part. I have a chance to buy a GK for $225 which seems like a no-brainer, but will it give me significantly more oomph that the PJB? I'm expecting it will. It's only 200 watts but a 15 moves quite a bit of air. I'm not playing loud rock and roll (and never will) but we definitely get the volume a bit louder than our typical jazz gig. So, any one have experience with this amp? I've always heard good things about GK but have never owned one. I shouldn't ever need to play my upright through this, but if I could that might be a bonus. Thanks for any thoughts.