Mine broke without warning in Moab this year. I was in 2wd pulling out of the Shell station when I heard a loud clunk sound. There were several large chunks of metal in there.
I now have an Atlas.
Hells Revenge and Finns n things are both good ones solo since there are always other people on the trails if you need help.
Some easier trails would be
Shafer trail
Onion Creek
Long Canyon
Dome plateau
Gemini bridges