I bought a Magnetospeed chronograph and I'm pleased with it. I don't have to wait for a cease fire to set it up.
Magnetospeed about $180 complete?
Not that big of a difference really, seems a lot simpler also,
I've often watched guys at the range peering through their sights or bore while attempting to setup there conventional chrono,
akward moment there, shooting your Chrono screen dead center......