I usually run UAV, CUAV, care package & engineer. Hellstorm is piss weak in this and gets shot down by trophy systems. Lightning strike is weak too, works ok for defending flags though. Rolling thunder is well... yeah. Crap. Wall E is decent but I can't be arsed controlling it, the new Dragonfire is good too if you want to control it but I don't like controlling stuff so it's usually just a massive flag above my head going "HE'S HERE GUYS, OVER HERE, COME LOOK!".
GI Joe is decent when he gets in to a good area. RAPS are great but if you're up against a half decent side odds are it'll get shot down before it can even enter the map. Same with Wraith. Even the HATR (fuck me, what a name eh?) can be shot down with three rockets.
Annoyingly I've resorted to running ghost when playing with randoms because these dumb fucks will never shoot down a UAV but mine always last about three seconds.