I’ve just pulled the trigger on a 105 version of the left sided 4iiii for my winter bike, which will be a large part of my training (which is how I justified it!).
I have the Ultegra version on my good bike, which I compared to my Hammer at the start (it matched, consistently). At the moment, I ramp test/ weekend workout on the Hammer, and then weekday do sessions on portable hybrid rollers at work. I’m trying to save the wear and tear in the good bike by using the winter bike, as well as having the option for outdoor rides.
Anyone had any issued in 4iiii to 4iiii comparisons? I’m assuming they’ll be like for like but maybe that’s optimistic…