I like mediums, especially for tuning down to DADGAD and other tunings, but my main working machine can't handle them. It's built too lightly and came strung with extra-lights from the factory. I was breaking too many of those so now I string it with lights, which are the heaviest I am prepared to go on that skinny little girly neck. ;)

The rest of my guitars are strung with mediums. (except an old Applause which I have high-strung).