I'm doing country and classic rock work. For indoor work (gigs, studio, rehearsals, church, etc), I have a GK MB150S . Love light weight for carrying, and full sound I get with my PBass or my acoustic DB. For outdoor gigs I use a Peavy TNT 130 with a single 15". It's OK, though a bit light for sound, and a LOT heavy (85 lbs!) to tote. I'm tired of lugging the big Peavy around so plan to get rid of that and pick up a GK 115MBE cab to use with the MB150S for outdoor gigs. Will get the 8 ohm 115MBE so I can run both the 12" and 15" together. Should give me more sound than the Peavy, and both together will be less weight. If anybody out there has that particular combination (The GK MB150 and an 8-ohm GK 115MBE), please let me know how it performs. Any problems? Is there enough power in the MB150 to drive both speakers cleanly? Thanks!