I have a traditional chrono for range use. For tuning at home, indoors, I like the Magnetospeed. As with radar, it needs no light. But it's not sensitive to muzzle position, and I'm often shooting at a steep downward angle into a pellet trap. It is absolutely accurate and reliable. It is a bit tedious if working with several rifles, since you have to attach the bayonet to the muzzle. And for the same reason, I don't use it for accuracy tuning while shooting a group, since anything attached to the barrel will affect harmonics. Different chronos for different uses.