I have used tygon r1000, generic home depot and lowes, and mcmaster. The tygon was the most clear and super sticky. The mcmaster is easily the best value, and what I will buy from now on. It is pretty close to the same price as the generic home depot/lowes stuff and works significantly better. The bend radius is outstanding and stretches over 1/2" barbs without heating. I haven't had the mcmaster long enough to know if it stains, but I read other posts saying it doesn't. Mcmasters online order process leaves a little to be desired, but they did send my order out that same day and shipping charges were reasonable.