test kit?
I've tried the ELOS Mg kit and the Salifert. I've had multiple copies of each test kit, and the Salifert has been much better for me, since it's a lot more controlled and "accurate" The ELOS one gives you a general idea of your Mg, but for sticklers like us, the Salifert makes you more confident having precise measuring tools and giving you more accuracy. The ELOS uses a lot of non syringe type amounts of mixes, so you're never sure how good a "drop" of something is, as opposed to the Salifert syringes that are super accurate.
I also don't think the Salifert is any harder to use than the others.
That's my experience anyway =) BTW my Mg is low, 1200ppm now, poo. gotta start dosing! Let me know if you wanna borrow my test kit to try out if you haven't tried them before. I have both ELOS and Salifert.