I’ve only had experience with the t-mars, it’s not ideal, as said a little clunky, mine hasn’t really fell apart though. A little rotational play that doesnt bother me at all. All in all, its cheap and so far its worked, occasionally needs a bit of help with my thighs “up”, but it’s still a helluva lot better than no dropper, it was also a fraction of the price, I can afford to buy another 3 before I even start thinking maybe I should have looked elsewhere. Given there are still issues with pretty much all the dropper posts one way or another…
If it does break, I will just take it apart and fix, it’s a simple unit and very serviceable. Very much like the gravity dropper.