Teamplay Form Type - Possession Or Condition

[Adam Howarth]

What are the relative advantages of possession and condition? I've got to choose between the two of them to advance my Teamplay Form threshold and I've really no idea how they actually affect my game.
I usually have my possession maxed out with supporters and Mourinho so is advancing my Possession teamplay really going to help?
Does Condition improve my team's performance on the field or just reduce how much Condition they lose in a match?

[wind]

This is a data game, actually very similar to the early days of FM.