My comfort level runs in the 3.5" to 4" area for max height, though I have some 4.375" high I don't wear those to often because the alter my walk to much. But I got a pair of boots that are 5" with a 1" plat and don't have much of a problem wearing them as for a comfort level in appearance. Also there is a point where a higher heel requires almost every day wear in order to keep the foot adapted to the height and I don't have the time beacuse that my job requires safety shoes.
If you look around you can find any thing you want in a heel height. But if I want a 5" plus heel I am going to have to pay a perineum price for a custom made cowboy boot starting a $350.00!!!
Just have to keep looking for what you want and nothing stops me from looking in the women’s section.