Thanks for the replies, please keep them coming. =)

I guess I should clarify, I was mainly referring with getting to 60, after 60 I can see how there would be a lot more difficulty with Warlocks and Priest. And also trying to get at least of every class to 60 and mixing and matching from there.

1 Paladin 4x Shaman looks like the best team to start with for RAF because you'll have a high level Pally for boosting. If the accounts are linked A>B>C>D>E, can the Pally boost from accounts A or E? That's something unclear in the FAQ.

I'm not saying Warlocks are the best choice for a 5man, I was noting that Affliction seems way too slow for single target, non-Elite stuff for questing via the RAF guide posted on these forums for leveling to 60. I noted Destro because 4xShadow Bolt plus 4x Imp Firebolt should down any mob at your level, costs 23% of base mana and you should only need to cast it once, versus casting both Corruption and Curse of Agony which is a combined 33% of base mana and takes longer to kill the target. For instance leveling, I have to go with Affliction.

Eventually moving the Warlocks to 4xFelguards would seem quite powerful, but may be unable to really clear Outlands and later dungeons easily.

With RAF, if you grant a toon 2 levels, can that toon in turn grant 1 level to it's referring account?

Do you need 4xHunter + healer or can you do 5xHunter to 60?

I was also thinking about something like 1Hunter, since they can most easily solo their way to 60, using the RAF guide, and having 1xRogue, 1xWarrior, 1xDruid, 1xMage just on follow so you can have level 60 of all the classes. Eventually boosting them would be ideal, but a geared level 80 Pally still takes some time.

I also read that while under RAF XP bonus, you do not use your rested XP, and therefore it's saved until you hit 60?

4xHunter plus 1xShaman? That seems interesting. Shaman can AoE heal enough?

5xShadow Priests also looks interesting, obviously once you hit 40 because they are very mana efficient using just Mind Blast and Mind Flay to down outside mobs using the guide. Up until 40, smite/holy fire/wand should do the job.

5x Pally? Were they all Ret or a mix of Ret and Prot?

Any other experiences?