I have no trouble moving snow with my Cub Cadet SLTX1050, and I get a lot of snow on my driveways (300' of lakefront in Michigan, no trees or anything else to slow down the wind from the lake blowing snow onto my 2 acre lot). I don't like the fact that the hydro isn't easily serviced, but it has not been a problem. The main issue I see is overheating the hydro, which isn't a big issue in the winter unless you destroy the mechanically driven fan. I fitted an additional electric fan to mine that I can turn on and off, but I only turn it on in the summer when mowing. My lawn is pretty steep, as is one of my driveways. The hydro whines under load, but many of the modern units do that, even the larger units. The whine hasn't changed a bit since new. And to be honest, I could buy several new hydros before I'd get to the price point of a Cub GT, which is more tractor than I need.
My main issue with the new cub 1000's is the blade rotor bearings. I haven't had trouble with mine, but that's because I grease them regularly. Those who haven't greased them regularly have had them die fairly early. Of course the schedule is in the manual, but neglect them and you'll be buying new ones.
Take care of the machine, don't push it beyond its capabilities, and you should be OK. Blowing snow isn't beyond the capabilities of a Cub 1000 series. Parts are readily available, which is an upside. My local Cub dealer is top notch, but I can't speak for others.
I ran a 46" 2-stage snowthrower on the front of my lawn tractor (not a garden tractor) at my previous home for 10 years without any problems, clearing my driveways plus about 300 yards of private road. I sold that tractor with the blower when I sold the house, and it was still working great. It wasn't what I'd call a nice, vintage machine either; a Craftsman I bought new in the mid 1990's. But I took good care of it.