I still use Miki 1 for the reason that I prefer some of the skins I have for her over the ones I have for Miki 2, depending on the project I'm working on.

Saintfox has Sajjan and Li-Lian for Miki 2, I haven't got Sajjan yet (she's firmly wishlisted for when I need her) but Li-Lian renders beautifully.
http://market.renderosity.com/mod/bcs/index.php?vendor=78941

Rebelmommy has Misha and Laurel, I don't have either of them but her work is always exquisite
http://market.renderosity.com/mod/bcs/index.php?vendor=276283

AGentleMuse has Margarita, Angelique and THATH (2 characters in that pack) that look great when rendered - I have all three
http://market.renderosity.com/mod/bcs/index.php?vendor=269129

I don;t know if those links help any but I can safely recommend those to you from personal experience of either the product itself or the level of craftmanship of the vendor.