The most attention from women comes when I'm at my leanest (sub 10%).
I look small in my clothes when lean, I think (but I always think I look small!). But women are masters of imagination. You don't need to show off like a douche. Wear a v-neck, and they can see the pecs are cut, and they start imagining everything else. Roll up the sleeves up the forearm just a bit, and they can see the lean forearms, and imagine the rest.
But the lean face is most important. And because most bb'ers when lean have decent neck size and traps, that shows thru too, so women again can use their imagination. That's what turns them on...when they get curious enough to start imagining what you look like with your shirt off. Then you're in their head.
This isn't some crackpot theory I came up with. A few girlfriends thru the years (and my wife later) have all said this to me. That is, about guys looking their best when lean, and not wearing tight clothes, but just being casual. There was this neat little web study where women talked about ideal male bodies. One of the key take-aways: they want you to look like an underwear model (lean, with abs, and good muscle size), but they want you to somehow come by that body naturally without being a gymrat, and mostly because you're just a sporty guy. Reason? Women want the hot body, but they don't want a man obsessed about it...because they don't want a man to obsess about anything but them. Women are selfish...go figure?
Sure, just like I want a woman who looks like Jessica Simpson, who has her MBA from Wharton and a PhD in electrical engineering from MIT, who earns $1.8MM running her company, but still has time to be home at 4:30 pm every night to cook my favorite foods.