I have 12" open and closed back Mesa cabs that I use with my Mark IV and, like you, considered getting a Mesa 1 X 10 to use with my TA-15 so I could save some weight and space on smaller gigs. Instead, however, I bought a DV Mark Mini 12 cab which weighs much less (12 lbs), has better power-handling (150 watts), and even has more compact dimensions than the Mesa 1 X 10. I'm very happy with the TA-15/DV Mark combination.