Thanks Sangetsu! Appreciate you sharing your personal experience with a Birdy, and the info about possible upgrades.
I nearly bought a new mk3 earlier this week on a whim.. but held off to gather more data (they're about 2 grand here in the UK, not exactly small change..)
Meanwhile I went for a 15 mile ride today, great fun. But again, pretty rough going. I cringe on some of the surfaces here..
OK. So aside from comfort (which clearly the Birdy wins on ) I wonder how it would compare to my Verge x18 in regards to speed?
This weekend I'm hoping to try a Birdy (although only the budget one, based on the older frame) and maybe even a Moulton TSR.. just for comparison.