I used GT+ for ages and It was well worth the freeness that it cost me.

Recently ive forked out the $25 for PA (less than a buying) and im pretty sure its paid off already.

As long as you make sure you keep taking notes and paying attention and dont let yourself think the HUD is doing all of the work for you then it can only be +EV when the cost of a HUD is a buyin or less.

IMO even just showing the hole cards (with PA) is worth the $25 since I watch them every hand and take notes but i probably wouldnt bother to look them up in the hand history for every single hand.