The Gnu CC is a great board you can grow in to, it's gonna be forgiving enough for a beginner/intermediate but also is the type of board you can grow in to as you progress. I really like the Machete but it's a different camber type, and although it's not a "park"-specific board, it leans more towards freestyle than the CC .
Machete will handle a little smoother at speed and deliver more in the way of "pop" for ollies & jumps, CC will be a shade more forgiving due to the banana rocker and also outperforms in the carving department due to the magnetraction.
If you're interested in riding park but still want to ride the rest of the mountain sometimes, the Machete is probably a better bet. If you're mostly interested in cruising groomed runs and what-not, with occasional ventures in to the park, go with the CC.