You're paying for the tech. The Mod/Mod Rocker is one of Rome's top-of-the-line boards. I just picked up the 11/12 Mod Rocker on a big discount a couple months ago. Have not ridden it but very excited to get on it.
What everyone has said about it is pretty spot on. I'm the same as you...I ride mostly park but almost always venture to the rest of the mountain for at least a portion of the day and so I need something that could charge AND be playful at the same time.
It's a rockered deck but it has more stiffness than most other rockers. Jibbing and butters are very doable but come second to jumps and freeriding.
Have you looked at the Rome Agent? Another great Rome board to consider. I like the Agent's graphics way better too...not that this matters, ha.