trying to research used prostar isx15 best atm, tc10 or ultrashift?

[moretodo]

Hello guys, i am trying to research the prostar with isx with a Allison tc10 and cannot find any drivers info concerning this setup. I am surprised how little information is out there sense prostar had them as a option for 5 years i believe. I have bad knees and want a atm but the ultra shift seems like it is not very popular with drivers. I have learned enough from this site {rawze} to pay attention to the gear ratios.I have read Rawze caution on not having tall enough gears in the rear axle,with the isx. What little i have learned about the tc10 it seems a shame production was stopped.