I own a 1x12. It's a great little amp. It has a funny mid eq spike, makes it sound really fat and one of the best clean tones in the boogie catalog.
Before I owned the Mav I had a Nomad 45 and was borrowing a friends F-30 to see if I liked it better than the Nomad. I stumbled on the now deleted 1x12 Mav in a store and put all three amps side by side and switched between them using my LP. The Mav won hands down. Not as much gain as the F-30 and the 45 but the mids ate both amps on the lead channel and it had the best clean tone of all of them, in fact it's the best clean tone I've ever heard with my LP (and I owned a Twin Reverb prior to the 45). Due to the mid spike on the lead channel the neck pick up on my LP (490R) gets a little muddy, might need to change to an SD seth lover or a 59, I use a parametric eq to fix it.
The Mav is an acquired taste definately. It doesn't compare to anything else I've ever heard, it has its own voice.
I have tried the 2x12 Mav but the V30's wreck the sweet tone this thing produces. So yeah, I'm sold on them. Totally old school which suits me.
Hope that provides some insight for you.
Jon