Grappling?

[SamuraiGuy]

If you can only pick one, it is without a doubt, Judo.

[JustaFighter]

Obviously it's a personal prefference. However my 2 cents is that for MMA competition it wouldn't hurt if your ground game consisted of 80% BJJ training and 20% Greco Roman training. Just my opinion though.

[TheTerror]

What form of grappling is most effective for MMA? (grace JJ, brazilian JJ, etc, etc, etc)