I recently got to work on a Starrett 2900-6 indicator, and compared it with a competitive product by Mitutoyo.
The Starrett indicators come with a user friendly 6-button interface, which makes it easy to use and I did not even have to refer to the manual for most functions! The Mitutoyo indicators on the other hand, with a 3-button interface are not self-explanatory. Referring to the manual (which is somewhat tricky to understand) for every task was gruesome.
Replacing the battery is quite simple on both instruments. The battery tray on the Starrett instrument is protected by two screws, whereas the battery in Mitutoyo has an unprotected access. The 2900 comes with true absolute optical scale, which essentially means that even if I replace the battery, the instrument will retain the previously set origin.
Another feature that sets Starrett apart is the IP67 rating, which makes it suitable for all kinds of harsh shop floor environments, which includes all types of industrial fluids like oils, coolants, solvents, naphtha, fuels, water. The Mitutoyo comes with IP54, which is limited in protecting the indicator against dust and water.
In my opinion, The US made Starrett indicators are definitely a step ahead of the Japanese Mitutoyo indicators. But, you know what they say about opinions, right? There's no right and wrong, but only good and better.