I heard an interesting opinion yesterday that said all freewheels made back in the day (we were discussing this over a wheel with a Maillard hub and a Maeda (?) freewheel). The shop mechanic said that because it was made in the hey-day of freewheels, it was automatically better than anything made today, in which everything freewheel is being slowly phased out. Now I've tried out mountain/hybrid bike freewheels on a road bike, and I liked the ramps and such, but do the older freewheels (especially entry-mid level ones) really hold that much over modern freewheels?
This may sound a little opinion based, but I'm know there's a factual answer out there comparing weight, usability, durability, features, and other technical attributes which make a difference to general, everyday performance.
Also, I'm strictly comparing members of the thread-on class, not discussing the merits of cassettes and free-hubs and other modern technology. I tend to run a lot of older technology by virtue of it being cheaper to pick up and cheaper to replace when my daily is stolen and cheaper to maintain myself.