the slightly heavier base used by The Kodak paper was in my mind far better and not easy to kink.
Depends on which Fuji paper you're using. Try DPII. Comparing Crystal Archive etc to Endura isn't exactly fair; you should be comparing CA to something like Kodak Royal. The Fuji equivalent of Endura would be Maxima. DPII is on the same base and of comparable weight and sturdiness as Endura. A week ago another printer and me did a side by side comparison of Endura and DPII so it's easy to see.