Gritty Supers Settings

Hey, everyone. It looks like my Hellfrost campaign will be wrapping up in the next six months or so and I've been looking at the possibility of doing a Heroes-esque supers game. Basically, I'm thinking of something a bit more real-world where people have no more than one or two powers at most. I'm planning on using Mutants and Masterminds but most of the settings I know are distinctly four color affairs. I do plan on checking out the Paragons book for 2nd edition M&M, but even that is more of a toolkit rather than a fleshed-out setting like Emerald City or Stark City.

So does anyone know of anything else? Supers is one of the genres I have little familiarity with when it comes to gaming, so I'm hoping there's some good options I just don't know about.

Gritty Supers Settings