[Loulybob]

Pokemon Trainer Club accounts (what you thing of as "Pokémon Go accounts", even though they're used for other Pokémon services) in the past were more buggy than Google accounts, but for at least the past two years I have had no more trouble with my account than my friends who have Google accounts. Additionally, they created a feature where you can link Google/FB to your PTC login so if it does go down in the future you can log in with those other services if you wish.