I think I fluctuate greatly, it's all in context. I'm probably a 6-9 when I'm at work in the hosptial, a combination of wearing nice clothes (plus objects of status i.e. stethoscope, beeper and ID), being shaved/well groomed, confident and polite. When I'm on the weekend, holidays or hungover probably around 3-5, I have patchy stubble, really messy hair (not in a "cool" way), wearing old jeans and T-shirts that are too tight or lose or full of holes.
Bah this is too subjective, judge for yourselves from my profile pic...