Oddball question: gas cans

[snousle]

Does anyone reading this have an opinion on California-legal gas cans, which since 2001 have been required by law to have (possibly inconvenient) mechanisms that prevent vapors from escaping? Are some better than others?

Comments

[barbarian-rat.livejournal.com]

I haven't had any good luck with them. I use older ones.
What size do you need?
We have a couple of 2 or 2.5 gallon ones that are not being used.