That is the chronograph I use, and I have no complaints about its use. Like Bret said, I don't use it every range trip, but it goes out several times a year. I would rate a chronograph as a nice-to-have tool, but certainly not a necessity to craft safe, accurate ammunition.
I would suggest for tooling.......a good caliper. A REAL GOOD micrometer. A pin gauge set. This last tool set is my most recent tool acquisition, and I don't know how I did without it previously.