Shooting Chrony is ultra accurate, and the very high end models have tons of features that are great, but there are two things that I don't like about them:
1) High cost, especially for the higher end models with the extra features
2) Large build. They can fold up for transport, but are still quite large, especially if you want to use them indoors, you have to set up a very bulky lighting setup for it.
This is why airsoft chronies are still the best for our application, as they are lit with a self-contained infrared LED setup.