I made this in Butchershop. The orange looks nicer in full size. I've used it on every Mac I've owned, including the iPhone, since 2006. Not big on change when it comes to my computers.
I like this site because it has multiple versions of each wallpaper depending on your resolution. For instance, I have a bunch that I downloaded specifically in 720p so I can use that for my screensaver on my TV and then also the resolution of my iMac (1440x900). There are some really gorgeous images there. Enjoy!