FlySky is a good cheap radio and there are self centering mods for around $10 if you want to go that route. I like not using the centering mod and use the left stick (mode 2 for me) for elevation on a servo. This way I can still fly with the same TX later. They have 6 and even 9 channel radios for a fraction of the big name costs. The range is great on them as well. I should have a few of their newest models in soon hopefully to play with