Advice on 3+ boxing

Hello,

I have never multi boxed and I would like some advice on a 3 boxing class setup. What I have in mind right now is priest/mage/warlock. I might not see all the pros and cons of this. I know it is harder to box 3 classes rather than 2, but it seems to me that I have more benefits in having diversity. If I become crazy about this multiboxing thing, I would add a paladin tank and a lock or mage for instances, or one of 2 locks, 2 mages, 1 lock + 1 mage if i pvp.

Can some people with some experience discuss about these different class setups?

Thanks

I boxed warrior/mage/priest for a long time. Lots of micro-management with 3 different classes, but still fun. Got them all to 70 but my steady office group has kinda fallen apart so I don't play them anymore.

I'm now trying out 3 locks, up to level 26 so far. Locks are already good at taking on multiple mobs, even better with 3. I don't PvP much so I can't speak to that side.

Basically 3 different classes can be difficult to control while 3 of the same class can almost be played as one character but at triple strength.