I had a 110mm Kalloy Uno that looked pretty nice, was around 120g. But together with the Toseek Aeronova copy, also quite light at 230g, my front end soaked up half the power when I stood on it.

Swapped out the Kalloy for a beefy Zipp number, I think it weighs 160g or so, and problem solved. Now the flex in the bars worked more like a spring to store and return most of the energy it absorbed. After that experience, I'm not interested saving weight on the stern - it's doing too much to skimp on material.