If you had to ditch a lens, which would you lose?

Going on a trip to Europe. Three lenses is a little much, but they all serve a purpose. These are my three lenses on a Canon T2i (1.6x): Canon 10-22 3.5, Zeiss 35mm 2.0 and Tamron 18-250 3.5. Which one dies?

EDIT: I'm taking 'em all. Booo yah.