ORTRE UX, Urban Cross Build - Part 2

In Part 1 of the ORTRE UX build I was left with the questions:

• Drop Bars or Flat Bars?
• Shimano or Campagnolo?

The first question was easily answered, flat bars would be nice, but my pile of spare parts doesn't contain any suitable shifters. It does however contain two complete road groups, a Shimano Ultegra set, and a Campagnolo Chorus 10 speed set. I also have wheel options for both.  So I guess now the time old question of "Campy or Shimano?" must be asked.