Originally Posted by
veganbikes
Tern and Brompton seem to be the least offensive but they are also ones of quality but none of these bikes were designed for hard efforts.
Can confirm that the Tern (Verge S11i) handlepost is quite rigid. Mine has about 15,000 miles on it after 12 years of commuting. I don't crank on it, though.
Handlepost is quite stiff in spite of the lever arm.