With regards to the 44 inch deck - I've got one on my 109 and it is cutting beautifully. I am mowing at max height - which is somewhere around 3 inches. Any lower and I get scalping. I have changed all my tractors and push mowers for 3 inch height going forward. Note, the yards I mow are not baseball field flat, but are somewhat rolley, some hills, they are lumpy and not all that smooth, so the higher cut just makes for a more even cut all way round. Less wear and tear too by not grinding any blades or deck parts into the ground. My grass looks much better too - almost velvet like. The only thing missing is a nice striping effect I see with the zero turn mowers.
The big difference I've seen on my 44 inch deck is with the speed-up pulley and running full throttle. I also have new/sharp blades too. I may add front gauge wheels to it in place of the sled runners one of these days.
I hear lots of good stuff about the gater blades, but wonder with the slots cut in the rear/lift portion of the blade, if that doesn't reduce the amount of "blow" or fan effect - clearing the grass from the deck/out the chute. I can't imagine it helps - but haven't tried them so I really can't comment.
I mowed a Church lot this past weekend with my MTD Cub Cadet lawn tractor and the grass was especially thick and about 5 - almost 6 inches tall. For whatever reason, this low end box store tractor, LTX 1042 (which I bought from a dealer) really sent the grass flying out the deck - zero clumping. I would have liked to have tried the 109 with it's 44 inch deck to see if 1) it would have the power to wade through such dense grass and 2) blow the clippings out the deck without clumping. Somehow I think it would.
One of my pet peeves with any "premium" heavy duty garden tractor is that even though there is an abundance of steel and cast iron, sometimes their quality of cut leaves something to be desired. It's almost like the cut was second thought to pushing a blade or pulling a plow. My initial impressions with my 109 was that this was the case, but with great help here, a little common sense and some adjustment, the 109 gives me a premium cut IMHO.
If you can't tell, I very much enjoy talking about mowing with these IHCC's!
That's what I think I know...