I've had Mark amps in the past (IIC+, III, IV). But for the last 10yrs or so been messing around with other brands and flavors and thought I had settled on a nice tone balanced with a fairly extensive pedalboard - and thought I was happy. Then the V came along... boy was I wrong. There are so many "amps" inside this thing, and they all sound great. The only issue that I have is that any pedal that I try to put in front or even through the loop just dilutes the sound - not that it sounds bad, it's just that a guitar > cord > amp sounds sooo good. Now I just have to figure out what to do with all these pedals.