I am in the same predicament now, looking to resod with Saint Augustine (removing Zoysia) and debating which variety to use.........
I have been debating between Floritam, Provista, and Citra blue. I thought for sure I was going with Citra blue, then I was sure I was going with provista......, now I'm thinking I'm just going back with Floritam. My concern with either of the other two types is that they are so incredibly slow compared to Floritam that any damage that eventually occurs takes forever and a day to recover. I was lucky to find a patch of Provista growing immediately adjacent to Floritam so I could see them side-by-side (they are actually growing next to each other), and the Floritam seems like it's on steroids compared to provista. I think the growth rate is like 3X. Since there isn't a barrier between this particular patch, I would guess in a few years the Floritam will completely take the area over.
Another person who has both of them
in their yard who I talked to also said the Provista was more cold sensitive as well, but thats only a sample size of 1.