[Skulemate]

There are equivalent formulations of Tygon and Clearflex, and are close enough in quality and performance that you'd be hard pressed to tell which is which, unless you look for the bluish tint of the Clearflex. For instance, the Tygon R-3603 is equivalent to Clearvlex 60, while Clearflex 70 is equivalent to Tygon B-44. In any case, these equivalent formulations have the same bend radii, same hardness, elongation, etc. My advice would be to buy which ever is cheaper. Also, when comparing tubing it is vital to compare only tubings of the same ID and OD, as the wall thickness is very important in determining what sort of bends the tubing can take without kinking.