To throw another wrench into this mix, let's not forget the fairly near HST implementation on the new Kioti Machines (CK25 and CK30 will have hydro's).
Hopefully the kioti with the new HST will have all of the bugs out of it. The kubota hst is quiet and smooth as silk. The nh I tried were noisy and after reading all of their threads on their hydro's sticking I think I would stay with the kubota.
I am looking too....love the nh lines especially with the fel and they are a little roomer but I think the kubota is my pick.