I have cartels on my cobra x. They feel great with the board. My cartels have broken twice, but after some research I've found that just about every binding company has issues with bindings breaking. Burton sent me a replacement when stuff broke, took about 5 days to ship. I thought about swapping my cartels for a different binding due to the issue with them breaking, but I like them enough that I'm keeping them anyway. Perfect amount of flex and really easy to get into and out of.