I tried one brand a few years ago, which did nothing but make my cycling shoes so tight, they went in the garbage.
Flash forward to 2 years ago. I got the new, Shimano road shoes, which are heat moldable. That is, the whole shoe and the innersole. The heat molding of the shoe was OK, but the innersoles, again were so tight, I had to take them out and go get a pair of the thinnest Superfeet ones at the Goodfeet store. Voila, perfection. There was no need for anything fancy. I basically can barely stand anything in my shoes,including socks. Getting the Shimano shoes to replace my Sidis, though made a huge difference, because of the wide toe box.