I have run Axial flows for the last 10 years,but switched to a 9650 sts.The sts did not throw more grain out than any axial flow I ever had ,standard rotor,specialty rotor,or a specialty rotor with Gordon rotor bars on a 2388.The sts had a much wider range of accepability to its settings of rotor speed and concave clearance, threshed and seperated better ,and had better grain tank sample.This in addition to much more capacity, and MANY other convenient features,like a feeder reverser that actually works, a variable speed header control in the cab,a larger fuel tank, bigger grain tank, a foldable taller bin loading auger that would fill the bin in wet corn without slipping the elevator drive clutch,smoother more responsive hydro control lever, no loud hydro squall in the cab when in 3rd gear, rotor grain loss sensor pads that stay clean(not covered with trash) when harvesting soybeans and wheat, round bar concaves that weren't getting plugged with pieces of cobs,leaves and silk, a straw chopper that was easy to pull the knives out and didn't need dirt_trash dug out to put back in and change speed standing on the ground, a tailings elevator chain adjuster on the bottom of the elevator, an easy safer way to get to the radiator to see if it needed cleaned (witch was a lot less),a cab air filter that wasn't compleatly plugged every day, a muffler for courtesy to anyone outside the machine, a 2 speed higer torque rear wheel drive, larger rearview mirrors, quick adjustment to slow down feed accelerator_rocktrap beater for corn, an option for work lights under side panels (nice not to need a flashlight to oil chains, and not as many of them, at the end of the day),an in cab numerical display of corn head deck plate setting (with hydrallic adjust option),three position header height swithes on contol lever, a longer unloading auger, a wider feeder house, easy to hook up header drive shafts (no wrench needed to line up the shafts),a feeder chain that can be slowed down for corn, faster road speed (with the same size drive tires),the flex grain head cuts closer to the ground and cutterbar that stays the same pitch to the ground no matter how much down presser is run. The only thing Deere copied was the way the rotor_seperator sets in the machine. CaseIH has not changed the inside of there rotor and cage design for 20 plus years. Deere came out with a better "axil flow" as far as material throughput, than CaseIH has now. We'll see what CaseIH changes on there next new machine, maybe a copy of some of the sts designIJ Untill they make some major changes and ad some of the extra feature's the Deere has I will not go back to RED!!