I REALLY like 11 but idk I always worry about how obvious the site can be. Publicly advertising we have cheating programs and whatnot isn't really a good idea right? I feel like we should be a bit more stealth when it comes to cheating so that's why I picked 13. It's simple, looks suspicious and just isn't out there "WE HAVE AUTOBUYERS LOOK NO FURTHER." type of display.
Why should we be more stealth about cheating? Codex has been around for 10+ year's, and everything has been fine. Not to mention that there have been countless other cheating sites that have come and gone. The only time you have to worry about being at risk is if you're careless and put out information that could get you frozen.
Oh and #11 got my vote; most of the others look like cheap advertisements from year's ago that I'd get rid of with adBlock.