I have a Shooting Chrony Alpha Master, as good as they come for accuracy. It doesn't keep a memory of shots if you turn it off, it doesn't hook up to a printer, or smart phone capable, but the read out can sit on my table next to my note pad and cost $116.00 to my door. It does track shot strings with AD and SD while turned on. With the read out , which is the also the brains of this model, on my table it's hard to shoot it by mistake too. They do have models with all the features mine doesn't, but I just wanted to see how fast my shots were running. I'm happy with it.