These are the first gel liners I've ever bought. EVER! I actually got these kinda recently like 4 months ago and putting them on the first time was really awkward. I was at the MAC store & the MA was showing these to me so I asked if I could try putting them on myself to see if I could get the hang of it... and I did alright for my first attempt... only I also poked some of this stuff onto my contact lenses and boy, do these babies STICK! I ended up having to throw one of my contacts away and was walking around in the mall half blinded.
Anywho, I'm not so sure that I'd buy fluidlines again even though they are really functionable gel liners since there are other brands out there like L'oreal Hip that make equally good gel liners. Frostlite definitely is the sheerest out of the rest. Because of that, it also makes a good highlighter and that's what I mainly use it for. They're all super water resistant so they won't budge (not even with soap & water. believe me, I've tried)