Since you are posting in the PV thread you are probably going to get more PV's .
With that, I've been to both places. Cabo is a desert on the ocean - so for the raw natural beauty - you are going to want PV hands down. It is more authentic Mexico - and they have beautiful green jungles, waterfalls, and of course the ocean.
PV is also less of a tourist trap for sure. You are going to find it more "authentic." I'm not saying bad things about Cabo - I love Cabo. But for what you are looking for I'm going to say PV. Cabo is a great party place, they have ATV's, lots of famous bars, good food, etc. Cabo is also more expensive because it is more touristy than PV.
Good luck! Let me know if you need any help.