ELRS and EdgeTX are legit. There is a reason a bunch of the really competitive racequad guys run this stuff. It's because it's the fastest and most consistent RC link around. It does this while being cheaper than anything around. Win win for the consumer.

Though I will admit EdgeTX isn't the most beginner friendly programming experience. If you know what RC channels are and kind of understand that much then it's pretty intuitive to program but if not it's the most confusing. Also all the intercompatibility it can do makes setting up a model to work with whatever receiver you have confusing also. You really have to do your homework to have a smooth experience with it.