Sorry for the delay, but it was crazy busy here lately.
The new T4.75 is waaay better than my old TC55DA with the aftermarket Laurin cab.
The AC works really well on a hot day and as long as all windows and doors are shut, it will make you freeze inside! There are no vents overhead, but there are so many vents up front that you can adjust to every where. The cold air gets evenly blown around inside the cab. Just do NOT turn the AC on full tilt, you may need a new set of teeth after you done chattering.
I have a 12x12 electro hydraulic shuttle shift, 4x4, air suspension seat, buddy seat and front loader. I have no complaints inside the cab!
However I do have a warranty problem with my transmission. For some reason specifically in high range there are gears grinding inside the transmission during clutching only. Not before and not after, but DURING clutching or changing direction of travel with the shuttle shift until it is fully engaged or disengaged. I got now 31 hrs on the clock. This is the only problem I have with this tractor. Some guys say that the shifting the transmission into Park is a pain (no emergency brake), but I had not that problem.
If you guys order one, get that air suspension seat. Worth every penny!