im playing all 3 healers as well and i like all of them in a different way. i started with a lvl 60 sch cause my main is smn. i learned how to support people directly at the ex-dailies without stepping in low lvl inis as healer at all... therefor sch was pretty nice getting used to all the aspects of playing healer at all. after getting a pretty descent healer i took focus on whm playing nothing else for about uhm... 3-4 month - i rly fall in love with it. atm ill try to finish Ast (current lvl 56). Like i said i like all of them but in different ways... whm have the strongest burst/heavy heals + regen its a perfect cls for taking the main-healer role in any 8+ content. whm is also the best bet for solo stuff, farming, fates etc. imo other would say sch cause your pet backs you up but i still think whm is better for solo tasks - cause of holy and assize. sch becomes more and more a hybrid healer... though doting and dpsing maybe fun, i just dont like the opinion sch "must" play as hybrids for dps checks or faster progress in lvl dngs. Ast is the most complex healer for me - giving you the chance to change your playstyle whenever you want it to. playing with instant shield or reg + mastering the cards is kinda fun. i know Ast and Sch could make a good look at main healers too, but like i said earlier if i wanna go main heal ill take my staff, if i want to be a part on dps support ill take my faery for a walk, if im on pure supporter mood ill take the Ast most likely in shield stance throwing my cards like Marvels Gambit on crack ; P

you should try them all - they'll all be handy in different situations ^^