I have been using the original LabRadar for a few years and previously used the old style chronographs for shooting. The LabRadar was a step up from the old plastic chronographs but it had ongoing issues (like missing shots, locking up, having to arm and disarm, Bluetooth connection issues).
The Garmin is small and requires very little input to use it. Once you get it ready it logs shots without missing any shots. It is a "set it and forget it" type of chronograph. I have used it for 45/70, 6mm ARC and even 50 BMG. It worked well for everything I used it for and was much easier than Labradar. It is the best I have ever used and I would not waste my money on any other chronograph - it is that good and well worth the money.
I have been using this product for several months now and it works great in all the applications that I have used it in. I compared it with my MagnetoSpeed and obtained readings within a few FPS, so for the ease of use this is my go to!