Well, maybe I'm not too bright in the Hagen test kit area. Or maybe I don't see colors so good...
I paid $60 for my digital meter and reading numbers is something I'm pretty good at, so...
In all fairness some test kits can be accurate (Hagen isn't on my list) and if you only need to do a limited number of tests, there isn't much point in spending the extra dollars on the meter.