I have a brand new Buhler Farm King Y6010 that I just got for $1400 delivered. I can't say if it is durable yet, it just arrived. But I know that Buhler makes several brands, you will find them under the Allied name as well. Mine seems to be very well made and the price seemed very good to me. My dealer (located in Illinois) also had larger sizes, I think a 74 and even a bigger unit. Buhler/Farm King/Allied is a Canadian company so I assume they know something about snow.
When I looked at the genuine New Holland units, they had a similar size unit to what I bougth, but it was about double the price.
Do a search on the internet, you'll find a few sources. And you will find some prices that are better than I have seen quoted on this forum. Other brands I have seen are PROVOST and PUMA and METEOR and WOODS.
Prices seem to run around a lot. Like I said, I paid $1400 delivered for my 60" unit, but saw prices that were lower (without delivery) and others that were higher (without delivery) but when I factored in the fact that I needed it delivered, and I factored in all the other fees, $1400 was a great price.