sizing of Nike Free shoes?

I've heard that the Nike Free 5 running shoes run larger than other shoes/brands. I usually wear a women's 11 or men's 9 in Mizuno and Brooks shoes. Should I get the Nike Free 5 in 10.5/8.5?

Does anyone have these shoes and also other running shoes? Could you check what sizes they are, please? Are your Nike's a smaller size than the other shoes?

I'm trying to get a pair of these cheap on eBay since I don't know if they'll work for me at all (mild overpronator) and our local running store doesn't stock them so I can't even try them for size. Some friends of mine swear by them for speed/track runs. I thought they'll be great for the indoor track this winter. And the pair I'm looking at is red! Should be fast

Thank you for any help/suggestions you can offer.