I'm. Currently using the last coat on my stinger gt2 and so far after a month its holding up nicely. I did put 2 coats on it though and I wash it about once a week. It kind of feels like a ceramic coating and is pretty smooth. I also use tec582 which I think is a tad slicker but dont think it's a durable. I've never used f11. I'm not 100% sure on buying TLC again but I'll know after a few months. Also my stinger is daily driven and is under trees most of the time and wipes off clean very easily.