There are plenty of pre-raid gear lists floating around for healers of all stripes, but since I put together this list for my guild I figured I'd share it with you. There are a bunch of helms available, but if you're looking to raid, I hope you'll consider a helm with a meta. The bonuses from the meta gems are just huge, especially at these starting gear levels.
I've only seen one head enchant, available from Hyjal revered. The standard healing meta gem from Wrath does not have a Cata equivalent, so our needs will be changing. I've seen three options that are PVE-centric. Kurn's got a meta gem list here, but I cherry-picked these three from the list as the one that will probably win for PVE.
Paladin BiS has a list here, but I only see two options with a meta. Got 2,200 justice points? Otherwise be prepared to spend lots of time in Heroic SFK. http://bis.vilepickle.com/slot-head.php
Resto Shaman Flow put together a pre-raid loot list. There are 3 (4 if you're an engineer) options with meta sockets. http://www.restoshamanflow.com/2010/11/19/resto-shaman-cataclysm-pre-raid-loot-list/
Lissana at Restokin has a boomkin/resto pre-raid gear list here. All three helms have metas. http://www.restokin.com/caster-druid-85-pre-raid-gear/
World of Matticus has a Quick Priest Gear list. Three helms with metas. http://www.worldofmatticus.com/2010/12/05/priest-quick-gear-guide-for-holy-and-discipline-at-85/