Discussing what kind of salt you perfer is like discussing what flavor ice cream you prefer. Never a "right" answer, but it can make for a good conversation. Just like ice cream my preferred salt has changed over time. I started with Oceanic, moved to IO, then Reef Crystals and now Seachem Reef Salt
For the record the ice cream evolution went like this: chocolate, strawberry, raspberry, chocolate chip, coffee and it's been mint chocolate chip for quite a while now.