Well weight you have to rotate 'counts' for more. Still, I'm ~220 on a ~35 lb bike sitting upright. Conditions permitting, I find 15mph to be very comfortable. Not sure I should really worry about small amounts of weight here. Maybe when I've lost 40lbs and am on something sportier than a comfort bike...

in hindsight, given that I'm working up to a 16 mile commute one way...it would have to be a really significant difference in speed to meaningfully matter more than a long stoplight will. So kind of silly for me to ask, I guess.

I guess I'll get the 2.0. I should probably err on the side of ride quality given that I'm struggling with carpal tunnel, even disregarding the likely negligible difference in commute time.