Can't really say much about the burton or lib tech but Rome has really great boards. If I could I would ride solely rome. If you're hitting 90% par the mod would be good but you might also want to look into the artifact and the garage rocker. They are both mad flexy boards that can shred the park. I rode an artifact pos. camber for the last two seasons and loved it!
As for the lib tech, those are always good boards man so if you find a good deal I might suggest picking that up, the mange-traction is apparently awesome!
Burton, eh idk I've just never been a fan of their boards but they definitely do have solid technology.
In the end, I would definitely go with the rome, or the lib tech if you find a sweet deal.