My buddies Caldwell seems to be hit and miss, I bought the ProChrono DLX and it produced the same numbers that I was getting off Magneto and hasn't missed a reading as long as the diffusers are on. The bluetooth app is pretty slick for recording shot strings and adding load notes as well. For $120 I'm beyond happy with it.What did you buy? I've been trying to figure out which chrono to go for. I like the quick setup of the magnetto speed but was leaning more towards a decent shoot through as well. I've heard good things about the new Caldwell.