Why Comfort Fit?
Standard bands are straight on the inside. Comfort fit bands are slightly domed on the inside, which creates a more comfortable fit. Comfort fit bands are easier to slide over a larger knuckle, which makes it desired by more men.
Comfort fit bands are made with three different weights: heavy, medium, and light. The heavier rings are naturally more durable, and have a better feel on your hand than the light rings. Men prefer the heavier bands for this reason.
Getting married is a big deal. Your wedding band is something you will be wearing daily for the rest of your life. Don't you want the most comfortable ring on your hand?