[ellenhp]

I love Photon, it's generally my favorite of the bunch to work with. My only objection to Photon is that it's kind of tough to build an index for it, but I think if memory serves GraphHopper (?) publishes one so that's kind of moot unless you have special requirements. Airmail is not in a state where it's usable for anything other than a demo, so if I were building something new today I would use Photon for it, unless I needed OpenAddresses in which case I'd use Pelias.

[SOLAR_FIELDS]

I will say, as someone who worked professionally in maps for several years, you are one of the rare people that has tried self hosting multiple geocoders at scale. This is such a valuable boots on the floor take that maybe only 10 people in the world can actually offer. Maybe 10 is too few but definitely less than 100