I think BBI wins the sculpting, painting and realism hands down. Their distribution seems to be spotty though and I can only find them at TRU. They are also slightly more expensive.
21C has all the new preformed legs and often give options on coats which make for great variety. They suffer from spotty distribution and take waaaaaaayyyyyy too long to hit the shelves in the GNW.
FOV is inexpensive, quality is slightly higher than 21C in my opinion and once Target finally got them shipped into the stores they seem to be restocked rather regularly. They have lots of extra 1/18 diorama goodies which are much appreciated. Also, I like the fact that Germans/Americans are issued at a 1/1 ratio.
I would prefer to see a new wave of figures from FOV. Cheap, readily available and nicely done. And this would be a nice touch to get them with the new "Warriors of the World" releases.

Thoughts?