I have 3 chrono's, an Ohler 33 that I got back in the 1980's, a $69 Caldwell cheapo that I have had for years, and a Magnetospeed Sporter that I got 2 years ago. I like the Magnetospeed to shoot groups with because I did not want to spend the $ on the Labradar. The one I actually use the most is the cheapo Caldwell mounted on a camera tripod from the pawnshop. If I change a load or am working on a load for more than one gun or something, I just grab the Caldwell, fire a shot or 2 to see where I am at and stick it back in the house.