I have the M500 and the 6T and 9B cabs, and have played the sixpack. I love the tone, shaping abilities, and construction, but be warned it weighs a LOT. (would be nice to have the tilt wheels and telescope handle that the sixpack does though)
Here's a neat story about the M500+6T (basically the sixpack).
- My band had a gig last weekend, and as usual I got there early and the band was cutting it close. I had brought the M500 and 6T from rehersal space, but the 9B was at my drummers house and he was on his way with it. we're running a little late, so when he arrives we set up and start playing. I felt like I had to push my master harder than normal (almost maxed), which was a little odd, but I shrugged it off.
After the set, several audience members complimented my sound, how clear it was. While packing up, I realize that the bottom cab wasn't even connected, I was just using the M500 and 6T. I had a good laugh about it thinking that maybe I didn't need the bottom cab as much as I thought.
