About to try Fritz Reef Pro Mix after 9 years of Seachem Salinity. Much harder to get Salinity these days and AC said they were having trouble keeping it in stock. The Fritz RPM was their recommendation.
It is a little more effort and cost, but I've always had great success with B-Ionic Seawater in the past. My guess is most won't like the process, but if you want consistency, I don't think there is anything better.