Nothing wrong with 72 mhz FM, I have 6 and 8 channel radios I am still using on other aircraft too. My Turnigy 9x I still need more recievers for Then my start to part with FM radios. I really like the 9x. I will keep one eight for my simulator.

You can get good used ones cheap! They will do the job too.

Like I said in my previous post it depends on what you are looking for and how much money you want to spend. It will all boil down to personal preference.