All right, first off I'm prejudiced...have listened to a buttload of Mesa amps, I own four top shelf turret board hand wired boutique amps, but here's my $0.02 worth.
Maverick, hands down for a Mesa product. Why?
1. The clean channel is to die for, and it can be adjusted for a blues dirty tone if needed, the fat side of the bright/fat switch is exactly what you are looking for. Touch sensitive, and just plain gorgeous.
2. The reverb is to die for, and with a footswitch capability for turning on or off.
3. Separate preamp tube sets in pairs dedicated for the clean and dirty channels allow individual channel voicing. With vintage old stock tubes or new old stock tubes the tones are uniquely all yours. Not all Mesa amps are set up in tube assignments like that...
4. Lots of bang for the buck, affordable when compared to other used Mesa amps, they are not trendy or super popular. A 2/12 in decent shape goes for 750-950 on eBay. Paid 635 plus shipping for my 2/12 a few years ago.
5. The master volume is a great circuit, it sounds great at lower volume/small room gigs, and overall, especially distorted, there is a surprising amount of volume available, the bright side of the bright/fat switch for the clean channel is the one to use for clean headroom for the larger venues.
6. The adjustable slave out allows connection to the sound board without micing.
7. Solid state rectifier or tube rectifier set by user, not rectifier tracking, a better way to go. SS rectifier better for louder venues, but the amp gets pretty **** loud with a tube rectifier.
8. There is more than enough gain in the lead channel for some rather aggressive distorted tones.
9. Master preamp volume knob for each channel in addition to the overall master volume allows appropriate balance between channel volumes regardless of room size/overall volume needs.