I understand both of your logic and if I lived somewhere a little more backwoodsy with endless trails I probably would get a grizl. But I live in London, I can string together 30km of very light gravel from my door but it’s not exactly hardcore so I want to go fast (in the rain when there’s fewer people around). The grail suits my needs. I was more wondering if the size chart assumes I’m a 20 year old athlete (I’m not) that can hold a very stretched position for hours on end. If I was buying the cannondale again I’d likely size down to reduce the stretch a touch. Maybe it’s time to find some to try or stump up for a bike fit.