Our game is currently set in the Wilderlands, that original, classic Judges Guild setting. We're taking the best of the different takes on the Wilderlands to make our campaign. Click here for our campaign info, or here to buy Rob Conley's Majestic Wilderlands, here for Necromancer's Wilderlands of High Fantasy, and here for the original Judges Guild line.
Our campaign used the Irrin setting, which you can find here.
I am also a big fan of the Hellfrost setting.