I was initially going to use UDK but after some reading it seems many people agree cry-engine is better for open vistas with lots of foliage. The mainstay of my scene. Another big consideration was support. With cry-engine 3 being relatively new support might be hard to find. So I was glad to know a couple of other guys would be using it for their FMP's, that way we'd at least have each other to bounce problems off.