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.