I've owned two. A Shooting Chrony Beta Master and a Labradar. The Labradar is great. Nothing to set-up downrange, not affected by different lighting conditions, easier setup, etc. However, it's much more expensive and not without it's own limitations. It can't read velocities exceeding 3,900 fps and has difficulty with bullets smaller than 22 caliber (even .22 LR it struggles with). So something like a .17 Fireball is a non-starter with it.
The Shooting Chrony Beta Master doesn't have the best reputation, but I liked mine and found it worked well most of the time. It doesn't have a velocity limitation, and never had an issue with .22LR, but it is affected by differing lighting conditions. That being said if I were to get an inexpensive one, the most recommended one is a ProChrono. The DLX has bluetooth, which is cool, and is $460 cheaper than the Labradar.
