have not used the garmin but after using the labradar a bit i'd say if i had my own range, didn't shoot suppressed, or airguns, and could set up the labradar semi-permanently so it was always dialed in to my target....it would be fine. but it's trigger(s) finicky, can miss shots, the app often disconnects, aiming the device isn't perfect even though i stuck a red dot on top....
it was the obvious progression from optical but now garmin has moved the needle to a higher level. no reason to even go with the new labradar. start with garmin, end of story. and in 3-5 years maybe some new next-level toys will appear.