I only have a couple spread collar shirts, but whenever I wear them I feel totally sweet. I've chosen to only use Brooks Brothers shirts to display the different collars that are readily available to every man.
Ainsley Collar, this seems like the standard in non button down collars.
a little wider - Tennis Collar.
a legit spread Hamilton Collar
what most people think of as a spread collar - English Collar
shorter version of English Collar - Londoner Collar. I don't traditionally like white collars on dress shirts but the white really illuminates the awesomeness of this collar shape.
out of control round collar - Golf Collar
Again all of these shirts are available at Brooks Brothers and would provide dudes with sweet alternatives to typical button down and non-spread collars. My favorite is the English Collar, because it is certainly different but not completely out of control. I only tie a four-in-hand, because I think its causal and shows more character than other knots. While my normal knot is thin, when wearing a spread collar, you should tie a fatter knot. Whether that be a bigger four-in-hand or maybe a double windsor. Explore different collars when buying your next dress shirt.