These are the most comfortable road shoes I've owned. I've had Sidi's and other Fizik shoes in the past. These don't bother my feet, they aren't tight and they are comfortable for long periods of time.
If they ever change this shoe or stop making it I am doomed.
Biggest improvement, from my point of view, is the addition of a toe tab and removable heal tab compared to the R1 model. A very comfortable & lightweight shoe. My only addition would be for reflectivity on back of the heal.
First time road shoe purchased; still getting used to fit stiffness. The power transfer is fantastic; very responsive.
Delivery was fast, race shoes are amazing. Already put at least 400 Miles on them and they have held up extremely well. Took a little bit to get used to the stiffness, but in the end love them.