I have been using 53/0/18 for quite some time now, but I made that from before the intellect/crit nerfs. Now I usually spam Flash of Light, instead of Holy Light, and crit isn't as important anymore, I decided to take a quick look at my current spec. It focuses a lot on crit (in the Ret tree), and since Holy Light had a lot of overhealing usually, I didn't pick any of the healing increasing talents in the Prot tree (like Divinity and Improved Devotion Aura).
These days, I usually spam Flash of Light, so overhealing is reduced by quite a lot. However, Flash of Light is really weak, and I think a boost from the +healing talents in the Prot tree would improve it a lot. Also, since crit isn't that important anymore, I won't be needing the extra +crit talents in the Ret tree. Without these talents, I have around 30% Holy crit unbuffed.
http://www.wowhead.com/?talent#sxAzgM0sVu0tgdxGzV0h
That's the spec I'm thinking of. Any suggestions?