We are talking very simple chemistry here. About the only thing you'll notice is less money in your wallet. Can't get much simpler than calcium carbonate formation from sodium carbonate and calcium chloride. Stick with BRS and save a couple bucks.
I switched to Bionic about a year ago to save a little time mixing. You use less Bionic since it is concentrated and I haven't had to dose magnesium since switching. It's staying at a steady 1380. It does contain trace elements but I do not believe they list what they are.