Full carbon.... I just got a Cannondale SuperX and it's pretty tough. It's a very solid feeling bike and so far it's a lot of fun on the trails and on the road. I', 5'11" and 200lb and have no problems with it.
Mine has Sram Rival 1 CX and was well under $2000 out the door with changing the rear cassette to a 11-32 and RD to a mid cage.