SX1040BII... Good size, not expensive, comes with a 400W PSU... Room for four case fans (comes with a pair in the rear) solid build and looks good. I don't bother with the windows since they don't do anything for the performance of a system. I'd rather invest that money in either a larger PSU (although 400W is more than enough until you want the 6800 series video cards :disgust: ), larger hard drive, extra case fan, or something I'll actually use/appreciate.
If I'm not using that Antec tower for a build, chances are, I'm getting a Coolermaster case...