Quote Originally Posted by x82nd
Mage+Mage
Warlock+Priest

OR

Mage+Priest
Warlock+Warlock
This all comes down to personal preference, really. They will -all- work just fine.

Mage/priest is probably the most awkward pairing of the group (assuming shadow priest). Warlock/Warlock is probably the best pairing followed by Warlock/Priest.

Personally, I'd do the bottom one just because I'd hate the idea of mage/mage. Mages already have some downtime issues and I'm not sure how much dual-mages alleviate that.