I'm looking for a lightweight, powerful combo amp for rehearsals and jams. I usually play with a drummer and a couple of guitars. I've been using my WM 10 but I think I'm pushing it a little too much. I'm looking at the Ashdown Electric Blue 12 and the Gallien-Kruger MB 150 12. Has anyone heard or played these two amps that can give me any information on them that will help me decide?