I think when it gets right down to it like everyone always says it depends on support. We have one and owned both TM and Maxter. Who you buy from and parts are a big part. Can you get parts at a reasonable time and if you use a engine builder is he available when you need him.
Who ever has one or the other will say that one is the best.
Both were good motors with good and similar power. Pick one that you can get support for in your area and go have fun.
Your on the right track with both as Dennis said. I’ve also owned both. Parts can be had pretty easy for each and all models. For the TM you need to choose from the oldest, K9, K9b, K9C, Kz10, KZ10b. Maxter MXO and MXV. For Maxter one year they had a vertical read cage which wasn’t to popular. I suppose a Vortex would be on the list also.