Definitely need to check out the EAV B-Ionic system. It’s not exactly what I would call “easy”, compared to traditional dump-and-stir salt, but it has a lot going for it, especially how fast it is ready to move to your tank.
I mixed some up the other night, and it was clear in a very short period of time. Plus, since all of the components are separate, you can control individual parameters. I was able to make a batch at 1.026 SG, but without tasing Mg, Ca, etc. levels.
Check out the videos over at BRS. It’s pretty interesting stuff!!