Delrin clamps hold extremely well. They are easy to put on, virtually impossible to mess up, and come in a variety of colors to suit any build. I would use and trust them more than worm drive metal clamps any day of the week. The one major flaw they have is taking them off. Its a pita even in a somewhat roomy case to hit the right angle with some of them. you have to pry up the top most locking lever, then pry up the next lever down on the other side for it to spring loose. I could do it quickly with a pair of flat head screwdrivers if i had an angle but some of them were just a pain to angle right.
