Lots of unique opinions in here so far.
To say a CTS-V wouldn't be a good daily is insane. That's exactly what they're for. An everyday, 4dr Corvette.
A set of winter tires for $500 and every single choice would be fine, even enjoyable in the snow.
I drove my mustang in the snow for the first time today, stock car, lowering springs, cheap 19" winter tires, and it was a tank. Love it.