the most comfortable way is likely going to be going commando....they are called "long underwear" for a reason....they are underwear...but longer in my eyes, theres no need to wear 2 sets of underwear!
no matter what you where under something tight fighting like UA, your likely going to end up with a thong....so im going to vote THONG or COMMANDO. personally, i will leave the thongs for the ladies....thats just me though.
