A good post jukel I have never heard a lab grey run of it's own accord or have it's own agenda but that said collie xs have stood the test of time must be a reason for it I know some have taken serious numbers of gear and there a pleasure to watch run with top owners I don't think there's been enough labs grey to really compare the two but labs have a off button I tried to put a picture of mine couldn't do it for some reason mine mark as good on rabbits as any runners I've had or seen weather doesn't bother them they just want to please