Tie. Mainly because I have a big boy job, and I'm an adult.
Apparently wearing ties make one a condescending asshole! I suppose if I worked as a waiter at a 'fancy' restaurant I'd be arrogant too.
I wear band shirts more than ties. Maybe half of my T's are band shirts, the other half are just random "funny" stuff (like the one I'm wearing right now...it's says "Punking Rock Extra Plowed" but it looks like the label on a Rolling Rock bottle. It's one of the few shirts I've owned more than once as the last one became too faded.) I only wear a tie when somebody dies, and even then, i usually don't.
Neither these days. Muscle shirts is where it's at.
I believe polite company calls those "wife beaters".