My Crew 4 essentially fell apart after 8 years on the road. I looked around for a while, but settled on the 9.  And that's exactly how I feel: I settled.

Pros:  looks good, great wheels, handle is improved, seems well built

Cons:  the suit insert is offensively bad, storage space is reduced by handle mechanism, limited color options

The suit insert is the worst. In the 4 it was far superior. I have removed it from my 9 and now just fold my suits and shirts. They may actually get less wrinkles now, but it certainly takes longer to pack.