It's a difficult call with all the SGs all over the place, in fact notice none of them are at NSW levels. I've never been happy with Coralife. I bought a couple of buckets to try it out a while back, and the inverts (mostly coral) didn't like it. I know it's purely anecdotal, but I wound up using it in FO tanks which I don't service too many of, so it hung around for a while.
I like the SeaChem Reef, and for my tank Tropic Marin, again purely anecdotal so take it as a bunch of blathering on my part. My tank seems to do the best with TM, and my customers tanks do just as well with SeaChem Reef since there is very little supplementation going on in those instances. I will say I've been using TM for at least 15 years now, and that is most likely why I'm partial to it.