The i10 is my favorite TX. That's what runs my 1/6 Hetzer and my 1/16 Jagdtiger and it's absolutely the easiest radio to use that I've found so far. If you do go with the i10 you'll need a self centering lever for the left stick, but as it happens Ian also has those at a good price and I have a video at my youtube channel on how to install them.

Good luck with the treatments. It sucks for us, too, knowing a fellow RC Tanker is going through that.