Rosewill recently launched the Armor Evolution case, a unique case that is ATX sized but supports an E-ATX motherboard. As the pictures demonstrate, it has ample support for USB 3.0 via front ports and plenty of coolers. Read more here: Rosewill Launches Armor Evolution Case | Hardware Canucks
Honestly, at first I thought "Rosewill....nah!" but then I actually looked at it. E-ATX support and likely a low price. They might have something here.....