It's a lot faster to lvl 5x of the same thing (or 4+1 if u need a healer) the macros are way simpler to make.

Pick every class combo you think you would ever want, and RAF it up. Once all is said and done, RAF gift to the ones that are tougher to level (melee) then take all your 60s, and make teams out of em and level em to 70 (should be really quick) then pick your favorite and level to 80. I tend to bounce between my teams if I get bored/frustrated, or I run out of rested exp.

It's a fine line, between making the most out of RAF, and having too many toons to lvl to 80. I have 90% of all the toons I could ever want, but I just got burnt out on the 1-60 grind. I will probably get some new accounts eventually and boost up a few more toons (2 more paladins for a 5x paladin crew, 2 more priests for a 5x priest crew, and a warrior to tank with, and 2-3 more hunters, just cause (though I can never really get into my hunter) Maybe a rogue team too... so many choices, so little time.