[bubbahotep]

I really dont want to choose because I use them both.

PT supports more sites and I use it mainly for hand histories and tracking statistics my play. I think its layout is better and gives more useful info. It is the standard which most people use, so its easier to relate my play in its terms.

I use PO almost solely for its overlay. I think the overlay is better than GT+, so thats why I use it.

No reason to use only one. If its +EV why not use it?