The difference between master pyraminx and FTO hardware seems to me to be massive. My master pyraminx (I'm not sure what it is - maybe it's a ShengShou? I bought it several years ago) is better than most of the regular pyraminxes I've ever owned. It's far from perfect, but it's really quite decent, and I've done no modding to it. From what I've seen, though, FTOs are almost all as bad as the terrible one I have (a LanLan, I think - my hands are usually in pain after I've done a single solve with my FTO) unless they are modded.
It seems to me that FTO has a much bigger group of advocates than most of the other puzzles being considered, and this interest has lasted and seemingly grown for several years now. I think that is amazing given the poor quality of the hardware. I can't help thinking its popularity would explode if only we could get a decent mass-produced version of it.