Generally shorter...but it depends on the guy. Some guys I can't imagine looking better with anymore than a lil' bit of hair. Some guys look totally natural with it longer.
That being said, it's awfully nice to have it long enough that you can tousle it with your fingers. Most guys have such nice thick soft hair - it's fun to play with.
But NO WAY should he take longer washing and styling it than I do or use more products! i.e. wash shampoo a little gel/mousse/etc. blow dry is fine. Crunchy hair is bad. Sticky hair is bad. Taking 1 hour in the bathroom while your shampoo (lather rinse repeat), conditioner, leave-in-conditioner, humectant, emulsifier, volumizer, shine agent, gel, mousse, styling spray, super-hold hairspray, and God only know what else all congeal on your head is totally NOT OKAY!
