Alkalinity test kit recommendations

[Locash]

I'm currently using a Seachem kit but I'm having a hard time getting consistent results. Any recommendations for an easier to use kit?

 

[Aquarian]

I use API. Which is a drop counting / color change system. It's pretty simple to use and understand.

 

[fastrd400]

Hanna checker. Quick and simple, no guessing at color, or counting drops.