Figured I'd resurrect this old post almost a year to the day I got my MK V. In a nutshell, all I can say is OMG! This amp is awesome. I am playing quite the variety of music on it...some you may not expect. I retired my old classic rock band after 11 years about two months before I got the MK V. I started a new band that plays Beatles, Stones, Byrds, Dylan, Petty, Wilburys, etc etc. We use a lot of vintage guitars and amps, period correct. My MK V is the newest amp in the stable by about 40 years. I am (and think you would be too) surprised at how well I can ape the sounds of the vintage Vox, Fender, and Ampeg combos we are using...this amp has been wonderful for all that, especially on CH 1 and 2. I find ch3 with the MK IIc+ setting is about the most versatile...I can rock the vol pedal way down and have an edgy clean sound that roars up to the sky when I dime it. I'm loving it. The only drive pedal I use with this amp is a Fulltone OCD...and not too often, as the amp has such awesome drive on it's own.
I am also covering a lot of Rush and Pink Floyd with it...especially Rush, and the MK V is simply stunning.
Overall, the only thing I may be changing is switching from my loop-master fed stompbox pedalboard to maybe a TC Electronics G-System. I just need to do a little more research.
Anyway, that's it in brief. Love this amp. If you haven't made up your mind to get one or not, just get one. You won't be sorry.
RB