They are good units. I borrowed a friends Alpha to check out some trouble with my rifle, liked it so much I just bought a new Beta model. Haven't had the chance to use it yet, most likely later today. Shooting Chrony's tag line is "Buy yourself an eye opener!" and they are right on the money. 20 plus years back, when I did a lot of handgun reloading, I'd have killed for a chronograph under $100. At the price, it's more like, can you afford NOT to have one, especially when testing out new pellets and/or rifles. Not something I expect to use every day, but I don't use my router everyday, either. Hope this helps.
Dave