Hmm, when it comes down to just handling large amounts of enemies so the team can take care of them... I'd bet on a Plant/Trick Arrow Controller.
My Plant/Emp can handle four groups of OVER aggro while my team finishes off the first one. And my Gravity/TA only has the single target attacks, Wormhole, and Singularity from Grav, yet still controls just fine using Entangling, Glue, Ice, Poison Gas, Oil, and EMP Arrows (she has the other two as well).
Plant/TA would definitely be able to to control the battle field.
To right the countless wrongs of our day, we shine the light of true redemption, that this place may become as paradise. What a wonderful world such would be....
I'm sorry what was that, I couldn't hear you over my TRAGIC PAST!!
Any controller handles everything pretty well. I agree with Plant, it's an awesome set. Myself, I still enjoy my ice/kin, I've got her packed to the gills with holds and slows, but since she's kin she can still also do tremendous damage with self-buffs.
Please read my FEAR/Portal/HalfLife Fan Fiction!
Repurposed
If you're running all AE content, a Controller might not be the best option. Custom Critters get better mez protection (if they have it) than standard critters. Pick your battles, and you'll do fine. But don't just pick things at random and expect to always do great.
If you want to be able to just defeat a bunch of mobs by yourself, and not worry about "handling" them (and you have a few hundred mil inf), then roll a Fire/Shield Scrapper and get some build advice in the scrapper forum (there's already quite a few threads regarding that combo, so you can kinda just pick through them and see what works).
@Johnstone & @Johnstone 2
ediblePoly.com
All my characters
Okay, I want to make an alt that will be able to handle mobs pretty much solo for AE teams and helping out lowbies. I've heard that Willpower/Fire Aura is one of the best combos to take. Is there another that works better and should I be a tank, scrapper or something else ?