Honestly, I have never used the BRS products because I can buy the Seachem products for cheap. I can get the 2L Reef Complete for $20 as opposed to $32 online. I also don't have to pay for shipping and I can get it on Thursdays as long as I realize I need it by noon on Wednesdays. As for ease of use, I can't compare the two since I have never used the BRS products. I find the Seachem products easy to use and I don't have issues with my levels being to high or to low. I also like the fact that I don't have to mix anything in ro/di water before use. I have been thinking about using their products, but if it isn't broken don't fix it, you know. I had that problem with the Aquavitro version, but not this one. No clue why.