My wife has a Bell RT. It seems to be well made, and costs around $60
http://froogle.google.com/froogle?q=bell+rt&btnG=Search
The visor buttons are spaced to allow an aftermarket flip up face shield for cooler days.
It fits her snuggly in that she has to pull the straps outward to get it on and off,
yet she hasn't complained about it being too tight, so it might be fairly comfortable.
