I still use V4 and M4 for monster/character morphs that I don't have for Genesis 1 and up. I'm with SamT in that I never really took to V4/M4 and never did build a very large library of stuff for them. My favorite characters have always been Miki 1 and 2, anything Blackhearted touched, Mankahoo's Angela and Aiko 3. I basically skipped over V4/M4 to Genesis 1/2/3 and I have a fondness for the monstrosities from Genesis 1. Dariofish's stuff are definite favorites.

In the newer render engines for Poser and DS I'm finding even old content looks fantastic with just a little subdivision/smoothing, so really, there's no reason to give up anything ;). We can use it all and nearly all of it still looks great depending on POV

Laurie