V4 for JP's and better morphing capabilities. Miki 2 still does not bend well and the was suppose to be the reasoning of making a new version, for better bending. Fine for still but so much post work to animate. Miki 2 does have a unique look.

I don't know the cost now but it might be cheeper in the long run to buy a CP membership. I think you get Miki2 much cheeper and the benifit of the giveaways and bonuses of the membership.