My group set up is Defiler, Templar, Warden, Dirge, Coercer. I know a lot of people like to have an Assassin for transfer in the MT group, but I love having the Coercer. She adds a ton of hate, but she also has +DPS buffs and the power tricks Coercers can do are pretty uber. Between the Coercer power tricks and several of the healers having power proccing belts usually nobody in that group's power every drops below about 95% (except the Coercer who keeps hers low for that one chanter AA that gives increased crit etc. while low on power), even if I'm spamming Adrenaline every time it's up.
In general a set up that works for a Guardian works for a Berserker. We used the same MT group back when we ran with a Guardian MT (which was all the way back in EoF).