Group selection. I'm torned!

[wyofiddler]

First thing to say is play whatever combination is fun for you!

My experience has been making a pally tank/mage/mage/lock/priest team, hitting 71 and then crash and burn trying to clear UK..... team got shelved quick since 5-mans are the reason I box.

Leveled that pally tank to 80, geared her solo through randoms and badges and then brought up 4 shammies to make the team Pally/ 4 shams.... awesome team. I've since dropped one sham for the warlock from the first group and she helps the sham dps overall quite a bit so that makes it fun too.

First solo char was a DK that I got to 80 before I started boxing, I've also pushed 4 Ret pallies up to 68 to play with the DK as a DK+4 Rets team. From reading these forums, this team is fantastic.....once they are amazingly geared. Before they are amazingly geared, and/or I become amazing at playing them, they really struggle with clearing lvl 65 normal dungeons with an 80 DK in the lead.... not quite the super-OP "smoke everything within 40 yards as they run through the dungeons without even getting out of breath" team that everyone seems to experience at the higher gear levels. Out in the world running quests they are amazing, everything dies in 1-2 GCD but dungeon bosses with AoE and other effects make these encounters much more challenging.

I've also started a 5 rogues team, they are only lvl 7 but they are super fun, everything dies in one hit as they literally run past without pausing, just run by and spam the dps key and everything within melee range falls over dead

TL / DR....
Play what you find fun, don't pick your classes based on someone elses idea of the most powerful combination.