I don't really see how this is even a contest (I chose 8/10) because an 8 is still hotter than most guys even need. Sure we'd love an "always on" 10, but an 8 is still gorgeous, and now you don't even have to worry about her taking forever to get ready.
I seriously don't even understand how this specific question occurred to you. Aside from a few outliers or people just wanting to be contrary, who wouldn't choose the 8?