I went with "straight woman... don't care" because I'm not specifically attracted to red heads or prefer them. I fancy red-headed men mainly when they have a beard (Glen Hansard, anyone?) because that red beard is just too sexy! And I think red-headed kids are ADORABLE!
I honestly don't really care what hair color a person has. I do love red beards on guys, especially when they don't have red hair. My husband has dark brown hair, but his beard is a pretty dark red. He's got this adorable little racing stripe (at least I like to call it that) in his goatee; the outsides are a dark red and there's a dark brown strip down the middle lol.
There's something mystical about red headed women - maybe it's the old Celtic in me. Probably why I dye my hair with henna these days, trying to capture that old mysticism and beauty.
Red headed men tho... most of the time, they just look awkward and uncomfortable.