Thing is, i play ret and holy both, and keep a full gear set for both, and i'm honestly not sure which spec of cloak to pick. I spend pretty much all my time in ret - i quest in ret, i do scenarios and dungeons in ret, i noodle around and rep grind or farm things in ret. But i raid in holy, because i'm actually pretty good at healing - not, like, AMAZING, but i'll generally be in the top two or three healers - and my raid DPS is just middling-fair.
So obviously you guys aren't me and don't have my play experiences, but if the choice were yours, would you pick the spec you play the most but are just okay with, or the spec you don't play as often but are good at? Turn a lot of okay into pretty good, or a little bit of very good into great?