Pocket radar is fine if you are lined up with the pitch, and not too far away from the catcher. I have found it reads the same as a Stalker in those conditions, or near enough. PBR has been using them on tripods at some of their Tournaments, which is fine, unless the tripod is moved off to one side or another, at which point it becomes inaccurate. 3-5 mph slower, in some cases, and I've noticed that they occasionally have random bad readings on things like 50' curveballs.