I was having feeding issues with FD75 on my S77 at the end of wheat harvest so we borrowed neighbors 9250. In 80 bu. wheat we went .5mph faster with 5 foot wider head. Spent the rest of the day figuring out what the grinding noise was around the chopper area, I think we've covered that issue. Fast forward to bean harvest and a visit from MacDon rep. with the correct shielding, and I think it feeds like the 9250 now. Did not have combine set up for flexing the 9250 but could have used it on down wheat, with the FD I can use the reel to pick up wheat but the 9250 would not do it.
Pros on the Dynoflex - Great feeding right out of the box.
Pros of the MacDon - Better reel control and function,
Never worry about guard wobble as header gets some wear on it,
Best cutting sickle on the market,
Crop dividers that work.
We cut as many bean acres as wheat with a lot of terraces, no complaints on flexing or close cutting.