I main SCH and love it (nothing against WHM tho) honestly SCH and WHM work so well together neither is better they both have flaws and strengths! I actually prefer SCH because I feel more in control of a fight as opposed to just feel like im healing any damage the grp takes or a dumb dps takes from not paying attention (trust it will happen and you will have to save their life but meh that's the healers job!)
SCH is a mobile healer and a monster single target healer making it the go to for keeping the tank alive in a raid so no matter your choice SCH will always have its place as a must have in any raid team (along with WHM of course) but SCH brings more than just heals, with a good SCH your team will take minimal damage even thru heavy damage spike times. To add to it all MICRO your fairy and place her well, then switch to dps with cleric's stance to speed thru trash mobs in dungeons or burn down boss fights!
I can't speak for WHM but my time as a SCH has been awesome!
