You should grab them all I believe they are all still free. I like V4 and there are lots of items out there with more to come I'm sure, but V3 has tons both free and in the markets. I can't say which I like best haven't used V4 enough yet. If you belong to the platinum club you can find stuff for both at $1.99 per item. Good for someone who is just starting out. You can get ten items for the price of one in a lot of cases. Have fun with the new addiction! Poserworld is another place to check out. If you are on a tight budget I would probably go with V3 for the morphs and just use V4 without or look for free morphs and characters for her.
Marque