There are a couple of disadvantages of running TM on a mac: you can't use pathtracer and 3d connexion devices don't work. So if you are okay without these two, the M-Pro or M-Max chips will be fine. If you are doing detailed / complicated projects then you might need a dedicated graphics card, which you can only get on a PC. The lack of Pathtracing on the Mac is quite a big disadvantage - so you will have to weigh your decision accordingly.
I personally use a M1 Pro laptop and can run most projects in TM with acceptable FPS. I use a remote PC for pathtracing though, and I wouldnt wan't to use just a Mac for renders if I didnt have that option. Depends a lot on your projects / desired level of quality.