PlacesScout is my go to for local rank tracking. It does grid tracking for both organic and map rankings which I think is super important. They also have a ton of features that I don't see most local rank trackers have, like comprehensive competitor and review comparisons.
In a pinch, LocalFalcon is also great because it's faster for one off reports, but it does not do organic currently. They do have a sweet metric called Share of Local Voice that I use all the time - highly recommend for audits and competition analysis.