I've used alot of character creation sheets, and hands down there is NONE and I mean NONE that beats TOS (The Only Sheet) for flexibility, expandability, and functionality.
From the various sheets you can print out for the table top, to the interactive laptop sheet, you can use if you have a laptop at the table, from changing game conditions, buffs, debuffs, spell effects and it to automatically update all of your statistics during play.
Oh you were just fatigued? List it in the effects, and voila you are done.
Not to mention the different add-ons. I can use the DM sheet another person created, and load in pathfinder characters, and I have the entire groups information at my finger tip at the table top, from running combats, calculating experience points, and seeing their selected spells..
www.theonlysheet.com