Test kit conundrum's

[daplatapus]

Instead of the usual which tests do you guys like, I'd actually like to know which ones you don't and why.
The reason I ask is I just tried switching from Salifert's Magnesium test kit to Elos, and I can't say I like it one bit. It's too complicated. You do 3 ml SW and count how many of drop A to change colour. Note that number of drops. Then dump that out, clean the tube get another 3ml SW, add drops B, mix, add reagent C, mix, add drops D until colour change.
Take # of drops in test 1 and subtract # of drops in test 2 then multiply by 50, geeze enough already.

I've never tried anything else for Mg but these 2. Might try redsea next.
LOVE Elos Ca tests.