Schneider vs Leica vs Contax on 1Ds Mark II

[snapsnap5674]

OK, I'd like to hear opinions as to which of the following lenses would be best for the "1Ds Mark II" when shooting landscapes, and why you think so:

1) Leica 28mm ROM contacts

2) Contax 28mm Distagon T*

3) Schneider PC Super Angulon tilt/shift

Thanks