My Spesh shoes are 43 compared to 42 in normal shoes, very comfy fit, but found if the top strap wasn't really tight - i.e. the ratchet, then I'd get hot spots - Spesh Pro Carbons. My old Sidi's are very narrow (Genius 2), and nothing like as comfy as the new shoes. Gonna be cheaper Spesh for training shoes one day. Problem is, get a good pair of shoes, and you won't want to put them down.