Tried to pick players that have a fixed PA, to make sure they're the same for everyone in every save.
Balanta - World Class label in my third season with Arsenal. Best CB ingame IMO.
Pogba - World Class label from the go. Best non-attacking midfielder in the game. Can play playmaker roles, box-to-box, ball winning etc. And do all of them equally well.
Hazard - World Class label in my third season. Just pure awesome stats for an AM in all positions.
The last two, though, are really expensive to get. Agree with a poster above me that Balanta is a must buy since he is so cheap and gets so good. Got Pogba for 80M quid with Arsenal (plus 12M sign-on fee and agent fee) and can only guess that Hazard would be equally expensive to pry away.