I've been looking at Egnaters a little bit today, and looked through a few threads in TGP and got some got info... it seems that most everyone is happy with their Tweaker 15W's. I just have a simple question - is the 15W adequate for standard band practice and bar gigs? I'd run it through a Marshall 4X12 cab until possibly purchasing a smaller cabinet. Or, for my playing needs, would it be wiser to go a little bigger with the Tweaker 40W? Thanks!