I have a Look 675 Light Ultegra Di2 with 2K miles on it and a Cervelo S1 (aluminum) with almost 10K miles on it.
The Cervelo S2 is pretty much the same as the S1 except it's carbon. I'm sure the material difference will bring added comfort to the S2 over the S1. That said, the S1 is an extremely harsh and stiff ride.
The Look is far more comfortable and while I've done centuries on both of them, I don't get as tired on the Look. I have the Look setup a bit more aggressively than the S1 and ride it harder and faster and still get less tired on it compared to the S1.
I do realize it's not a fair comparison between Aluminum + mech vs Carbon + di2
There is very limited frame/brake clearance on the S1 or S2 for wider tires i.e. I can't fit 25mm Conti GP4000s on 23mm rims on the S1, but they fit perfectly fine on the Look.
Originally Posted by
Loz_90
Thanks for all the replies, especially the above! I'd be curious to know, when you say "night and day" in reference of comfort - how significant is the difference? Or at least, how noticeable? Assuming I avoid Roubaix-racing with it, will it be ok? I'll be doing the occasional century, but mostly will be focusing on the time trialling / short sportives and using it as my summer bike (for racing and training purposes).
Essentially will the Cervelo kill me over 60-70 miles?
Saw a comment about "build quality" in the cervelo vs. look discussion - are there general poor reports on cervelo build quality?
Thanks again!