Honestly....and keep in mind I'm looking at this from strictly a collection perspective, I would not give up the cranberry. The reason is that bag is a pilot, and the cranberry color will NOT be coming out for the regular line. If you care anything at all about the collector's aspect, I think you will regret getting rid of it.
However, if you concern is one from a practical nature, or just based on what you like better, then if you need to liquidate the bag to make funds, that's the way to go. I would just be certain you will like the ombre when it comes out. Sometimes the pics don't look the same as in person.
I'm also attracted to the ombre as far as any of these Sabrinas go, but I still think it's a bag I need to see IRL before making a decision on that one.