They are a pretty good medium duty tiller. I have sold them in the past and really never had many issues other than the normal imported drive shafts. The whole tiller is made in Italy.
The RH6-165 has a working width of 64 inches. The RH6-185 is 72 inches wide and should not be much more money if your needing the extra width.
They are only rated for 60 HP so don't used them on a bigger tractor and they are fine.