I researched and demo'd all 3. I went with Tracked Lift '72 arbor by arbor. Most durable imo. Not as may features as CMC - Mine doesn't self level (if you have run equipment, this will not be an issue. Less than 2 minutes set up). Outriggers configure in one set up pattern only. This omits need for many sensors. A plus to me.
Talk to owner of TL, he was very knowledgeable on the differences. Their salesman not as much. If you can go to New Oxford, PA make the trip. No remote control, basket controls are wired right to main. A plus in my book.
CMC does have its very own facebook page for all the troubleshooting issues, check it out for yourself.
Uplift did interested me. Lightest by far in their class, some days this is a plus. Heard good things from them.
But light also means not as much steel. TL frame, chassis and outriggers are built like an tank. Just couldn't pull the trigger on Canada. We all have issues and need service. Both TL and All Access are 4 hrs from me. If I was close to Up, I'd might have went that way. Where are you located?
I'm not saying I am 100% correct and mine is the best, just made my decision and 14 months in zero issues. When you go into the larger tracked lifts, more sensors are in the design and over 10,000lbs (their 107' is 13,000 lbs! That's a heavy weight). If I go into the 101 range, good chance I'll take a very long look at the UP Equipment.
Hope this helps. Ask any questions.