9.5/10. (Loses half a point for the annoying photo booth requirement every few years). Have you made the switch to Annuel? Or are you still recharging month by month? Drop a comment below.

It turns the RER from an expensive nuisance into a free library, mobile office, and people-watching lounge that happens to move.

If you live in the Paris region, you know the drill. Every month, you either fumble with your phone to recharge your Navigo, stand in line at a ticket machine, or—worst case—get stuck with a ticket t+ because you forgot to load your pass.