I would say that it is worth it if you don't have/want to spend a lot of money. I myself would prefer another brand like JR or Spektrum.
I know that there are people out there that disagree and that is totally fine with me. IMO, when it comes to radio stuff, I prefer to make a good solid investment and have the backing of a really good company even if it means paying a bit more.
I will not say that the 9x is a bad TX by any means but if things go wrong, the HobbyPartz/Nitroplanes folks can sometimes be a bit finicky about taking care of the situation. I have dealt with them quite a bit and own alot of thier stuff and it is hit or miss.
I am not trying to make you change your mind at all, just want you to think about the other side of things and make a good informed decision.
Hope this helps.
Wade