My son and I own a Labradar. I have been exceptionally pleased. It hardly ever drops a shot and gives great data. Best of all, it is away from the rifle. So, If you don’t drop the thing it works great. My son finds that it does not record shots from suppressed handguns, especially AR style handguns shooting 300 Blackout in subsonic. Otherwise I rate it the best I have ever used.
I was using a Magnetospeed. It slipped down the barrel un-noticed and my Whelen shot it too pieces. Being honest with Magnetospeed, they offered me a new unit for 15% off. Earlier, my family purchased me a PACT. Never, ever could get the thing to record. Sent it back to the factory, they said it was within specs, sent it back, no charge but same results. A second rate boat anchor for Radio control yachts. Had a Chrony. It worked almost all the time that the sun was right. However, like all Chrony’s I eventually had a low shot. Chrony’s have a particular dislike for low shots.
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So, the Magnetospeed is an ok unit, but check it every shot and get the higher end model that seem to ahve a better bracket. My recommendations is to get the Labradar and do not drop the thing.