Whats the best chalkboard paint?

i'm painting one of my bedroom walls (14'x8') in chalkboard paint.... but i don't know which kind to use... I've been looking at rustoleum chalkboard paint but i don't know if its any good... i want a wall that can be drawn on with chalk and then you can erase it and not even know its a chalkboard wall....(i'm a neat freak and i hate mess or anything imperfect) so please help! 10 points to the best answer!