I agree that the lycra is best......very comfy etc. Some are OK commando, but for some reason I am yet to identify....some are not. The seam down the middle can, lets say, "irritate". Underneath, and it's suprising, athough quite nice, how many men are talking about this. I thought it was only the sort of talk women had when they went to the loo. I wear anything from the days underwear (because I'll be showering afterward) (baggy boxers wouldn't work though) to thongs, or the old fashioned jock-strap, which I think was a good invention but they aren't always that comfy nowadays. You need a bit of a layer of protection and a bit of support I guess. That was wht they offered, but perhaps they have been superceded.