I have only tried NJAP so far (new to the diabetic world) and I don’t think I’ll be switching to another brand. Tried the X ones first for Libre 2 and they do the job perfectly. I change it around 8-10 days but that’s okay I guess. Just bought the classic one recently and I must say it sticks and stays on better than the X ones. Use it with some skin tac and I have no irritation at all. Really a life saver even though a bit pricey :)