Case-mate's latest tough iPhone 4/4S case, the Phantom, just started shipping, but it's worth calling out because Case-mate is officially launching it at CES in Vegas.
This is a "two-piece" case, but it doesn't include an integrated plastic screen cover like some tough cases do (it comes with a stick-on screen protector).
As noted, the Phantom comes in multiple colors and retails for $50. When I get my hands on one, I'll see if it's worthy of making it onto our
Top 20 tough iPhone 4 and 4S case list