I only use the Hetchins on fair weather days, but it gets a good going over on those!!
The others all get a regular outing.....I have a different one for most types of riding that I may encounter/partake in.......from a raod/path fixed gear from 60's to a cyclocrosser to a tourer.....everyone has there advantages!!
None of them are modern, although some have early t omid 90's parts on them!