I'm looking next to get my Commando to 50. My friend already has one that's 50. He went mostly left tree so his turrets has rocket pods, shields, and he has 2 of em. My question is: The middle tree which will grant me the Ranger (think that's the name of it, boosts all your stats) and the Nuke turret....is it worth it? I wanted to build a different one than him.