Which is the salt of choice? Why is this choice best for you? I currently have been using IO, but the LFS that is helping with the corals I'm adding suggest switching to Kent Marine. His tanks do look great!
I've always used IO. See no reason to switch. In my opinion - a great looking tank is not the result of a brand of this or a brand of that - it looks great because the owner has learned what consistently works for him/her. Good Water Chemsety - Energy & Food In - Waste Out - Balance !
Brian