I have a wide-ish foot, and I have found Specialized's shoes to be the most comfortable. I have two pair, one road and one mountain. Sidis were always too tight in the toe area. Nice thing about a women's shoe is that the ankle area is tight enough and doesn't flop around like men's shoes tend to on me.

Shimano's WH-80 are semi-custom and might be worth a try. Bicycling had a short write-up about them.

http://www.bicycling.com/article/0,6...7179-1,00.html