Arms + which Heals for 2s?

[Auberdeen]

Been running a lot of 2's lately and got up to 1700 with my MW buddy but he keeps ripping on his class when we lose because he thinks MW are just so much worse when compared to other healers. The mobility of our comp is awesome but its the lack of peels and CC that seems to really be hamstringing us. He also kept saying that he tears through mana and is gimpy after his green bubble.

So, my question to you is which of Hpal, RDruid, Disc and RSham are most viable while trying to push rating? I'll admit I usually play with an Enh Sham or Rogue and don't know too much about Healers CD's, CCs and crucial abilities needed for 2's. Having said that, i'll list a few of the things I would consider a plus to our "viability" but then again I could be WAY off because I haven't really pushed rating before.

-Hpal: freedom, bop, bubble, fear, blinding light
-Rdruid: mobility, cyclone, roots, HotW nuke if I can't finish the job.... are druids gimpy after treeform?
-Disc: absorbs, MC, fear... and I can never seem to kill Discs....
-Rsham: hex, shield, mobility...uh... don't see that many Rshams tbh

Please halp! THANKS!

[frigoffrick]

Priests, end of story.