The M3 Sculpture Pack is sold at DAZ. It gives you a new CR2, with channels for injecting 300 more morphs. (No, you don't have to inject all of them!) There are also a couple of jaw morphs in Free Stuff that do a lot to fix M3's distinctive, sharp jaw.

IMO, M3 is much harder to make different-looking than V3, but in the galleries, you see a lot more variation in M3. I really think it's because our standards of beauty for women are much narrower than for men. A 40-year-old guy can still be a hunk, a 40-year-old woman is "too old."

There's a V3 Sculpture Pack as well, and "Brom," which is Capsces' fantastic morph pack for M3. I use them often, but I don't do much animation.

M3 and V3 are awfully heavy for animation. The injectable morph system helps, but probably not enough.