Much like women's fashion, men's fashion is cut for one specific person, and chances are it's not the wearer. Most of my dress pants fit fine around the waist, but they're tight around my thighs. I can't bloody well bend over if I have anything in my pockets larger than change. The next size up fit my legs just fine, but are a wee bit loose. The longer the legs, the more room, the shorter, less. Funny enough.
Very similar for dress shirts, where the proper neck size I need (19) turns the rest of the shirt into a tarp.
In a word, NONE. Especially for work. Dress shirt + tie + slacks + shoes + belt/suspenders (+ suit/sportcoat (+ vest)) = All men's wardrobe. The variety comes in one form:
Women can identify themselves and express their creativity through their wardrobe. Men only can through their ties.
There's more, but I'm too tired to finish this now. I'll make an addendum later.