I don't know... the fact that males may decide not to eat during breeding season sounds like a good reason to choose a male. You'll save money because you wont be feeding off as many mice.
Other things you may want to think of:
Males tend to be larger than females
Females may lay slugs once they get to be sexually mature (though this is usually only if they have been bred in the past)
If you think you may want to get more in order to breed them:
1 male can breed many females, so if you are like me and would prefer to minimize your breeder stock but still get a wide variety of morphs in the babies, you should get a male that is homozygous or at least heterozygous for MANY traits.
Having a female as your first snake will allow her to get an extra year or so of growth on her compaired to the male; this will allow you to breed much sooner than if your male was older than your female.
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Cornsnake Projects:
Coral Snows
Ghosts
Bloodreds
Caramels
Ambers