I have not had a single problem or issue with the CVT. I love it. It does not make that irritating whine that a hydro makes, and transfers all the power to the wheels.
I drove a Ford Escape with CVT transmission, and it took some getting used to. Same with the 8N, but once you get used to it, she's a workhorse.
Disregard the rumors about "problems." "I hear there are problems," they will say, but I'm a guy who has one and I have seen no problems with the tractor. As to whether it will work or not - well, it's a 50 hp tractor, and it's working for me.
Be careful of some of the dealers selling on the internet. I bought mine from such a dealer and, while I think I got a good tractor at a good price, the way they treated me was clearly indicative of the knowledge they knew they wouldn't see me again. But, as I said before, my local dealer could not match their price.
New Holland is trying to move these things, because they've become an over-priced embarrassment on the lots. Once they're priced right, and now I think they are, they are going to move like hotcakes.