I wear very little cotton anymore.  I have a few dress shirts from Lands End and that's it..  I'm 6'3" and weigh 180lbs.  Long arms, long torso.  I wear lots of Under Armour simply because it fits right.  I get medium tall t-shirts and hooded sweatshirts and large 1/4 zip fleece shirts.  I have enough of the warm stuff I could go two weeks without doing laundry.  We generally air dry most of our clothes but they can handle the dryer as well without shrinking.  I think clothes last longer if we don't use the clothes dryer.

Occasionally I'll need to go to a store that has more "fashionable" clothing.  Sometime I'm going to climb up on a display and ask why all their clothes are for short and/or fat people.  I need to request a Tall, Slim, Athletic cut shirt.