I love the Hanna ALK the most. It's quick, easy (no foil packets) and no guessing.Same but salifert alk. Probably getting Hannah alk. Also using salifert for PH. Thinking about grabbing Milwaukee ph monitor but havent ruled out apex system yet and someone want to waste money.
I used to have the best apex on the market at that time with PH. I got out of the hobby for awhile and then sold it and when I got back in I had to buy everything from scratch and got the cheaper Apex Jr. Now I wish I had the PH capable APEX... that's the way to go.