I'm with Eden - although the winter shoes sounded/looked tempting, I can't really afford yet another pair of bike shoes so:
I wear my mountain bike shoes which are a tad bigger with SmartWool socks...as the temps drop I add toe shoe covers and eventually full shoe covers and SealSkinz socks and my feet stay quite toasty warm! now......if I could just figure out how to keep my butt warm it'd be perfect!
Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, champagne in one hand, strawberries in the other, body thoroughly used up, totally worn out and screaming: "Yeah Baby! What a Ride!"