Re: Sturmey Archer
I mounted akit on 1969 Schwinn Racer. Old Sturmy Archer 3 speed. The rear sproket was tricky to install but the ride was smooth. I abandoned the project 'cause the other combonentes didn't seem up to the job and it was getting to be a fortune to upgrade everything. make sure your breaks are up to snuff. The Sturmy Archers are the workhorse of internals- if you cant afford a nuvinchi it's the way to go.
As far as shimano- I've been riding a 7 speed nexus very hard on my road bike for 15 years with no probs at all. the trick to all internals is never shift while under pressure and after shifting power up smooth. if you never drop the hammer they last forever.