Interesting. I'm assuming that the power shuttle would be a wet clutch and the manual a dry clutch? When we bought the nh we had the option of a td90 (I think) which was a manual dry clutch and the t5050 which was wet clutch and the advice was to choose the wet clutch all day long. The wet clutch model was almost €10 k more but the tractor came with a better cab and better spec.Probably would be but can give more trouble as I understand it.
Massey6480 gave a good summary there of their capabilities
Local landini dealer is selling new 100hp manual shuttle @€52k. Its not too badly priced. He seems to be shifting a good few of them.