I've got lots of auto-open umbrellas acquired from here and there over the years, but this has become my new favorite. It just works so obediently and it's the perfect size for city streets and public transportation; big enough to keep me dry but not so big I'm poking pedestrians' eyes out or battling with it on train platforms. I don't know why all umbrellas just don't do what they're supposed to do and do it quickly, but this one does, and that's enough for me to give it 5 stars.