Rogue/Mage/Priest 3v3: Does not really get much better than the old fashioned RMP. Not much really to say about this other than the fact that nothing really hard counters it when played well and rogue/mage synergy has been golden ever since season 1 about wow gold.

Rogue/Mage 2v2: For much of the same reason above, this is one of the easier 2v2 comps to get high with as a mage, next easiest being mage/priest probably. The only debatable thing here is whether arcane or frost is better for this comp, and I personally feel that frost is better for 2dps whereas arcane is better for mage/priest about wow gold.

Prot-Holy Paladin/Death Knight 2v2: Can not really be much easier than this. Virtually un-oomable healer (and very hard to take down), combined with the peels, longevity, and damage of a death knight and you are basically a really difficult team to beat unless the other team has offensive dispels and knows how to use them well to get cheap wow gold.

Holy Paladin/Priest/Warrior/Ele Shaman/Dest Warlock "2346" 5v5: This is arguably the easiest 5v5 comp to play right now due to the ridiculous burst potential of both ele shamans and destruction warlocks, combined with the healing reduction and durability of the warrior about wow gold (not to mention Blade storm burst) . This comp can kill almost any class in the game in an intercept stun, and with the paladin being the least likely target on the team along with the support of a priest and that much DPS, this is really one of the easiest comps to get high with as a paladin in my opinion about wow gold.