Karl was on an FR with a Jmo graphic, as far as I know.
I'd say go with the FRs. They're not a bad all mtn ski, and with 70% park, you'll be enjoying the whippiness of the thinner ski for rails and jedi jump skills.
That said, it depends on your park style. Personally, I'm more of slow spinner in the park, so I'm not looking for the quickest, lightest tool in game. There's a little more stability to the Jmo, and it's a better all around ski, so I'd make your decision based on what you think you'll be doing.
Also, if you're a bigger/more powerful dude, the wider ski won't be an issue to push around. If you're more on the willowy side of things, it might be an issue to have the wider one.