I tried the Giros on last week and was amazed at how much better the fit was compared to my sidis. No heel slip and good room in the toes (no squishing)
FWIW, I'm a 43 in Sidi but the Giro fit perfectly in 42, which is my normal shoe size.
Saving for a pair, so cannot comment on the on-bike performance.
I'm thinking of these too, where did you try them on...Condor?
I'm thinking of these too, where did you try them on...Condor?