CEP question for newbie

So, I’m looking to start dabbling in creating my own hak pack content after some dabbling in the toolset already before. I want to build it to be compatible with the CEP so want to be building it that way from the start. Complicating that decision, though, is that it seems to have forked into CEP 2.x and CEP 3.

Can I get a pro/con breakdown to help me decide which I want to build with? I’m having trouble finding information on the differences between the versions, so I don’t know which would be best for what I want to do.

EDIT: will be working with Enhanced Edition

There is a reasonably objective comparison of the CEP forks, which has been discussed with both projects, here.