Itsmnevis wrote:Echoing what Rendigar says above me, the Water Spirit is the only one I use with any regularity, and the one I'd recommend getting first (and leveling). It also has the most open-market value, since it has that 'endgame' use.
Earth isn't hard at all if you have a fast rabbit and a darkmoon zep, and because it's close by you'll skip its daily the least.
Air is the one I got first, the healing elemental gave me fits when I first did it, but an Emerald Proto-whelp can solo all 3 pets.
Fire is the one that gives me the most trouble now and I've probably done the least. It's out of the way, and a good-looking pet, so potentially a good choice.
I got the Air spirit first also, on the AH very early in my pet battling career.
Air Spirit, Onyxian Whelp and Anubisath Idol were my first pets to 25. The air spirit is "slow," but its heal is very powerful over a long battle and she could grind out most wild battles all on her own.
If you're already doing the quests for the Pandaria tamers, then yeah, get the Water Spirit.