Pays to Belive sons

Seems like there are quite a few P2B sons on the market now.  With the success of P2B himself, would someone be better off using him or does one or two of his sons breed better in certain areas that would improve on P2B’s breeding?  Just trying to figure out if one of the sons is worth using on a small herd of Sim females, or if I’m better off sticking with P2B himself.