They work just as well as the original Spektrum until you get one that doesn't. What you aren't paying for is quality control and service. Essentially, you are the final inspector when you put that $7 receiver in your plane and take off. I'll suggest you put together a plane that you don't care about like a combat foamy or SPAD to get an hour or so of flight time on a new cheap receiver before putting it into a plane that you like.