I have both Jestar, PR is quicker to get into I find Both have good points, arma is obviously a lot more modern.
Another thing in .91 PR is they changed the rally points to refresh every 10 mins so in theory you can join a game and the squad quite quickly.
Looking forward to PR on arma engine if they can just make it easier to start a good game
I switched to medium textures for some of the newer pr maps as it does seem to kick up problems more often with the larger maps