I've used a couple of brands (not red sea but I stopped adding coral before theirs came out). The only one I use for special occasions is the seachem dip for infections as it has iodine in it which is supposedly helpful. Otherwise I use whichever. The last set of corals I got I QT'd after a dip. I am pretty thorough with pest security.
Just remembered one thing I did get told by LFS when I got it - it's fine for most corals, but can be a bit harsh on leathers and toadstools. I don't know how true that is though.