There are positives and negatives for all of the likely candidates:
Given: long affiliation with the club however plays in goal and very rarely do they make good captains as they cannot communicate properly with the midfielders/strikers
Barton: captained man city, very passionate, but is a new signing and whether he should be made captain so soon after the move is questionnable
Taylor: young, passionate for the toon however might lack respect from others because of his age and may be too much responsibility
Butt: very experienced but probably wont play week in week out and still hasnt won 100% of the fans over with his love for manUSA
Owen: might make him stay but he will probably leave in january or the summer, doesnt want to be here and was a poor captain for england imo
Barton is my choice for captain as it is the start of a new era with new blood with Given keeping vice only through his brilliant loyalty so far