Thus far. I'm very happy with a Pro Chrono. (about $100) Several hundred rds & it shows every indication of being accurate & consistent;and that's without the rods & sunsceens on! Not much testing in direct sunlight yet (sunscreens would have to go on),it is winter and I do live in "the heart of it all".
Before that.Lots of rounds through a Chrony..No complaints there either.Maybe I was lucky on that one,as some friends had not such good luck with Chronys?