The MPF Fairway and the original Xcaliber Tour FW’s have very similar profiles. Not sure if the Xcaliber you are describing is the same or a different model. There were several. The Xcal Tour SL Fairway is more flexible in profile. There was an Xcal Tour SWD60 FW that was similar in the tip flex to the MPF, but more flexible in the mid and butt sections. Those are the only comparisons I can give between the MPF and the Xcal in the Fairway shafts. In general, the MPF shafts are on the firmer side of each flex range. In other words the stiff flex is a firmer stiff than the average stiff flex. Same for the driver shafts, hybrid shafts and the irons shafts. We have had a lot of success, and continue to, with the MPF. IMO, they are under valued and under priced for the performance they provide.
Britt Lindsey
How about the MPF Pro Series UL vs the DR? Are they similar profiles but just different weights?