which frame would you choose?

[Velozirrapt0r]

Hello everybody; what do you think is better:
-caad4 frame with Look sch3 forknon-integrated) or
-caad5 frame with Look shc4 fork(integrated);

I have heard that caad4 and caad5 are the same but the head tube, the first is non integrated and the second is integrated.
and have heard that caad5 weighs more, and is less rigid in the head tube also; But caad5 is newer, almost all new frames are build integrated, so I don't know what to choose...what would you do?

pd: and I must consider that I can get better price for the caad4 because is older, but I like more the red color of the caad5.....!