Who has the best repair skill in Fallout 3?

You and ony you once you raise your repair skill to 100.

The next best thing is one of the caravan traders Crazy Wolfgang, who sells misc. junk and the occasional treasure, can repair items to 90% after you have talked to Uncle Roe in Canterbury Commons and donated to Crazy Wolfgangs trade a total of 700 caps, then sell Crazy Wolf a +5 repair skill item.