I bought a "new old stock" pair of Bont A-three in euro size 47.5 from Performance on special a little over a year ago, I think. Was about $80 for the pair which was about the best deal I ever got on shoes. So my experience has been to maybe order a half size bigger? They really fit me like a glove after heating them up twice. However, I've never tried tracing and measuring my foot. I'm missing those shoes ever since I broke the plastic strap that goes into the buckle. The shoes are pretty beat up so didn't want to spend $40 or whatever it was to get new buckles and straps.

Edit: Looked on the Bont website:

http://shop.bontcycling.com/epages/B...20Kit%20Set%22

And its $16 + $25 shipping or $41 total. Eeek...