I hated the MRT pre U patch. It felt like the rear end was always going to break loose no matter what - at least to my coarse hands.
Post U patch and ironically the MRT is my favorite. I love the immediacy of response that the MRT gives. Economy of line and motion makes the MRT most effective. IMO, after a session driving the MRT, the other cars feel "dull" in comparison (FO8 and BF1 withstanding).
I am having trouble getting my head wrapped around the setup of the MRT though. One would think it was rather straightforward, but I can't find that sweet spot of balance, and then if I do the car feels underdamped, i.e. it wallows/porpoises over bumps. I tried following the advice in the unofficial manual, but I find that stiffer springs and bars work better for me.
I wish more servers would be running the MRT...