Ordering my saltwater stuff... what salt?

[BlueAbyss]

Hey everyone, I'm finally filling a tank with saltwater, ordering the salt and some other stuff (a refractometer etc.) as we speak... but I'm at an impasse. I have 3 options for salt, prices CDN:

Seachem Reef Salt 54.95
D-D H2Ocean Pro Plus 79.95
Reefer's Best Coral Reef Salt 89.95

I'm leaning towards the D-D H2Ocean Pro Plus, but wanted to know what other more experienced people thought. I've thought about it myself, wondering why I don't just go with Instant Ocean, but I feel that since I want to keep my levels up for corals from the start I should go with a higher-end product.