I use Red Sea Coral Pro in all the tanks. I have had good success with it.
However, I think any of the major salt mixes would be fine. The important thing is the consistency of the water, Routine water changes, good skimming, etc.

here is a link I have posted before comparing all the major sysnthetic sea salts:

http://www.aquariumwatertesting.com/...lysis_0208.pdf

mark