about the key getting stuck, I never had any issue with that and i due own a tartarus pro and a huntsman v2 analog. after i got them i was wandering what problems due they have to be prepared, and a lot of people says " keys getting stuck" and after some research found a video with the problem
the single problems I had with tartarus is quiet uncomfortable for gaming ( at least for my hand ) but I don't use it for games, I use it for macros. to change my microphone input from the one on the desk to the one on the headphones, with a 3th party software ( audio switcher ), change the RGB profiles ( per key profile ), change the speed of the pump and fans and some controller bindings for testing the analog switch. for me was curiosity and that is why I did get the pro version, I could get the v2 variant for way cheaper but curiosity =)))
and honestly, the market for keypads is not that big, there are some people who use the keypad like me, but honestly I don't think they are to many people that will pay 100+ usd for a macro keyboard and even me, I got that because I found it verry cheap on a used products website, for the pro i payed ~ 70 euro and brand new in store was 150 euro ( yeah EU prices are insane )