idk about the C&D but they have a massive amount of rocker which can be a bad thing when skinning. if you have a ton of rocker there is less surface area which means less traction when skinning ( which makes you slide around, fall down, and can be very miserable) so if you plan on doing a lot of touring i might reconsider. if your content with on3p i would go with the steeple 112. also if you skin with super wide pow skis your topsheets get destroyed (mostly at the tips and tails) because of the constant banging together when you walk. as the marker f12, i have no experience. i do happen to tour on the marker baron. my setup is a little heavy, but it gets the job done and makes my legs stronger. and from what i hear the f12s tour better than my barons, which means theyre lighter too.