I have a shooting chrony Beta Master. It works great in any light conditions except fluorescent lights which is understandable. I have never compared it's accuracy to any other chrony or brand, but it seems to be spot on and consistent.

I run it with pellet guns through bigger mag rifles. Heavy loaded hand guns tend to spit a lot of stuff which requires a lttle more distance between the muzzle and the chrony, but other than that it's never had a problem.