Originally Posted by
ZHVelo
Not to mention on all the Alp passes, those 1.2kg add up.
To answer your question, a small difference in weight between two bikes isn't going to make my decision. It's something I'll take note of, but ~1 kg is low on my priorities in a bike. Same group, what are the wheels like on each? Even if you want to bring your own wheels it's real nice to have backups. How do they handle? Is one more aerodynamic?
My bike is 8.1 kg. With a power meter from back when they were heavy, hydro discs, and deep aero wheels. Also Di2, that doesn't affect the weight, but all of that stuff plus it handling the way I want a bike to, and I'm happy. They make a lighter frame but I didn't feel like it was worth the money, I've already got what I want.
I don't feel like it adds up, I know it does to a small extent but I don't feel a difference riding up with or without bottles. And I live in the American Alps. But I'm not chasing a kom, I'm going for time at whatever wattage I need. So my opinion doesn't apply so much to you.