I've got the standard Competizione S and they are really comfy. I've got a lot to say about these boots because they saved my foot. I was
T-boned by a Peugeot 206 and it crushed my foot against the bike enought to bend the heel plate into the swinger and crush the exhaust. Although I thought my foot was broken, it wasn't and I was back on the track just three weeks later.
I've worn right through the toe sliders and was asking about replacements on the Shark Stand ( TCX importer ) at the show. Told the guy how impressed I was with the stiffness and reinforcing of the boot and he has sent me my sliders and some silicon grease ( to deal with the legendary squeek ) FOC. They arrived yesterday. Turns out the guy was the MD

.
Anyway, great service, great boot and very happy. I also have wide 'plates of meat' and the sizing is right against my other footware.
HTH
Ratty