@willbuckingham Frankly I could only ride a YouBike on shorter trips. That saddle is way too wide and soft for me, I'm used to the kind of slim chopping boards with very firm padding - and yes: a less upright position with less weight on my bum.
Longest ride I ever did on a YouBike was from Damsui MRT past Hobe Fort, up to the ocean front at Qianshuiwan Seaside Park and back. Sadly that was not a sunny day in the spring of 2016...