I like the soldier and engineer the most, next is the sniper
dammit valve needs to make a weapon set that make the spy assualt oreinted
like this:
+your health is now 200
+your gun does more damage and fires faster
+your sapper hijacks enemy sentrys to attack the enemy team, while dispensers leechs health and metal for you
-no critical hits, like, never
-sappers require 5 seconds to place
-you can only disguise as an enemy spy