I believe that as long as you are using a major brand of salt you will be just fine, it is just a personal preference. The Reef Crystals is a good salt, used by major aquariums around the world. I just didn't care for the brown ring that occurred at the waters edge and it didn't seem to mix as well as the Kent Reef Salt. But there is nothing wrong performance wise with the RC.
When I mix my salt, I first use RODI water that I fill to a certain point in my buckets, marked on a wooden dowel that I stuck in the bucket. Now I have it timed on my RODI filter to stop at a certain time, double checking it with my stick. That's 3 gallons in a 5 gallon bucket and I was keeping track of how much I was adding, I added salt until I got it to my salinity level of 1.026, I still check every batch I make but it stays pretty consistent. I seem to use a little bit less of the Kent than RC, but not a big difference.
You also are never butting in, you are always welcome, into my conversations anyway.