When I was a little kid (5-6) I thought Supes was the Man! As I got older, I bought into the whole "Batman is cooler b/c he's dark" vibe. Now that I'm in my 40s, it has come full circle and I like Supes the best (for DC--in Marvel, it's Cap).
Kinto'un! (I apologize for the geekness) You're wise in not showing Supes' symbol. That way you can simply mirror the image when you're asked to place the image on the left side. These look great. You know people (myself included) will now be expecting to see wallpapers with all of the JL8 characters, don't you? Cheers, mate.