When I added ballroom to my activities, after many years as a figure skater (which I also still do), I found I couldn't balance in heels higher than that of the typical skate boot -- about 1 1/2". So that's what I wear on the dance floor also. Fortunately I'm small, as most female pairs skaters are, and have small feet, so I can buy my dance shoes in the upper range of children's sizes where that is the norm for heel height.
Does the reference to tight shoes in the post above mean street shoes, or do some dancers wear tight slippers for security? I'm fairly new at this activity and compete only at a low level, locally. I don't find dance shoes too tight, being used to skate boots which have to be at least a full size smaller than your street shoes to avoid any shifting within the boots putting off your balance on those thin blades. My skating forum constantly deals with people asking for advice re foot and ankle pain. Does the problem arise only with closed shoes, or does it also occur with open sandal styles (which I've not worn so far but have my eyes on a pair I can't currently afford)?