I've got the inov8 F-Lite 195's, F-Lite 230's, Reebok Crossfit Nano 2.0, and I have the Crossfit Nano 3.0's coming on Monday.
the Inov8's are narrow... the crossfit's are nice because they're wide, but hurt my legs and back when wearing them all day... I hear the nano 3.0's are more supportive.