After much research, I purchased these as I wanted a twin with a trailer. I'm using them in the Slater Design Akila Aipa shaped Flat Earth model. It's a performance twin, and I was looking for the drive of the H4's I use in my JS Raging Bull and enough release to surf tighter with confidence. The Mick Fanning Twin's based on the H4 template have what I'm looking for. There is a reason they sell out so fast every time they're released. Check out the video and do some research; they are a great choice.