PVA vs nonPVA IG accs question

Hi. I'm willing to buy a couple of aged IG accs and there are 2 options : PVA and non PVA
Now my question is which is better ?
I will do cpa offers on them. Things that bother me are phone and email verifications it'll be cool if someones took time to explain this to me real quick.
I found a guy who's selling aged PVA accs with 1 year free proxy and cloaked url ( btw how to redirect that url to my cpa offer ? ) and I was confused abt verifications if I bought that kind of accs
Thanks !