I cant comment on the Tygon or ClearFLEX 60 Have not used either
But the stuff i,m using that came with swiftech kit works great and when i needed more i just ran down to the local Home depo and picked up 10 feet of clear vinyl tubing for less than $3 lol and it seem to be working great with no kinks its clear as glass I been happy with it
Guess we see how it ages