I do not think there is any "right one". I used Coralife for a few years then switched to Oceanic. I am currently mixing up my first batch of SeaChem salt for a water change tomorrow. You will find what one offers, others lack. The trick is figuring out what works for your tank and with your source water.
Some people are like slinkies...they serve no real purpose yet can still bring a smile to your face when you push them down the stairs!:p
Have a great day! Brian