I really liked my Adidas Cyclone shoes...
Seems like there is/was a fair bit of crossover between Adidas and Mavic when it comes to cycling shoes, so it might be worth your trying out some Mavics?
If you do go down the DIY route, I seem to remember someone on here recommending putting the donor (in)soles in a very low oven (~70C) to soften them up before cutting to shape.
If you do go down the DIY route, I seem to remember someone on here recommending putting the donor (in)soles in a very low oven (~70C) to soften them up before cutting to shape.