I did use Lansing once, but as Nate said, the top and bottom panels typically need reinforcement as they flex a bit. 
 
Typically I use Context cases.  I've also used these: 
 
DIY Enclosures LLC. - Welcome 
 
But there is a finite supply and they are starting to run out.... unless you like gold front panels.  It looks like they are out of the heatsink cases as well.