I had the MT for awhile when it first came out, but have no experience with the mic24/96. The MT was ok for what it was, but I think there are much better handheld recorders available now. Especially concerning battery life and field powering, the MT is a pain.
For the money, I'd really recommend looking into the "box" series of mic preamps from Naiant (mshilarious here) -- littlebox, tinybox, etc. Do some searches, lots of information on the littlebox and tinybox, which are very nice and affordable 2ch preamps. Also, I've been using for awhile now the Sony D50, and Sony now have a smaller/cheaper Sony M10 that many people are liking quite a bit (again, do some searches on the M10).
I'd recommend ditching the MT, and picking up the littlebox with the internal li-ion battery option (~15 hours or so of runtime off the internal battery with the C4's) for $260. Then pick up a new Sony M10 recorder for $200 (at bhphotovideo at this price, maybe elsewhere) and pick up a flash card to go with it. Still probably $100 less than the option you're looking at, maybe closer to $200 less out of pocket if you sell the MT. And the M10 is much more reliable than the MT and has way, way, way better battery life.