I stopped using Google Authenticator in 2013 when my tokens disappeared after a software update [1]. They were restored in the next update, but I didn't like not having access to the raw TOTP data.
I switched to Authy after the incident, and now use 1Password after I discovered their TOTP feature.
I switched to Authy after the incident, and now use 1Password after I discovered their TOTP feature.
[1] https://news.ycombinator.com/item?id=6325760