What did you choose? I used Google Fi for a while but it's becoming gradually worse, so I've kept it mainly for the off chance that I need to go somewhere I can't easily buy a sim card.
I travel to Europe a lot - being originally from Italy - and they will have to grab my original 30$ per month contract from my cold dead hands. I get - slow - unlimited data when travelling and free SMSs, saved my bacon more than once.
I think they have something similar for 45$.
This question was specifically targeted at the parent. People need a long term number when they're overseas because otherwise their home services 2FA doesn't work. People use GVoice or Google Fi because they need a US number. Ideally you don't want to switch sim cards for that purpose. So I'm more interested in the US.
I'm with ATT and have been since about 2006. For all their faults, they've never let me down with foreign cell service.