Just bite the bullet and go custom. I did it a couple years ago and bought some semi-custom Riivos. I now have two pair of them. One of the best purchases I've made. Sure, they cost about $1000 a pair, but given the number of hours I spend on the bike each year and the number of years I keep my shoes, it's a pretty good investment.

And like you, I went through Sidi Mega, Specialized wide, Lake wide, Shimano wide, and tried Bont. None were as good as the Riivo's.