Since you have a Rollie, what do you gain from the RB67? Again the Rollei has better optics. The RB67 has interchangeable lenses, no parallax issues, measures the light through the filters, polarizors are much easier to use, closes are possible through extension tubes, and you have a slightly different negative shape.
There is your decision tree: I got rid of a complete C330F for a Hasselblad and never looked back so I would go with the RB67 for that reason plus the ones listed above. Question 1: How you will use the C330F versus the RB67? Question 2: Which will make you happier? That only you can answer.
PS: If you only own Rollei you could walk around with wide angle, 80mm, and telephoto Rolleis hanging from you neck as bling!