Sheriffs are generally worse than the PD. I’ve yet to be impressed by the standard of either.
Personally, I don’t think eliminating the police is a good idea. I think it’s worth to look into and test alternatives, but for now, the police are an unfortunate necessity. I think there are a lot of reforms we could make within policing to make it better for everyone, but I do understand the position of those who want them gone (and I don’t blame them). Also, like John Oliver mentioned on his show last night, there’s a lot of other unsolved social issues in the U.S. that are contributing to bad policing, institutional racism, etc. We have to solve those in order to solve this current issue, which pretty much means that we’re fucked because Americans are dumb as shit, and incapable of attempting meaningful reform or following the guidance of strong research.