SFnFLaGuy - AFAIK, there is only 1 type of 747-400 that's used by United (now). They all have C+, although the actual pitch varies widely, depending on where you sit. IMO, all upper or main deck seats aft of the respective exit rows are good.
Edited to add: Empress typed faster..
[This message has been edited by Tennen (edited 07-18-2002).]