I haven't tried Blizzacks. If stock 16"x6.5" wheels clear on the comp g (I'm guessing they do), 215/65's come in decent AT's. You'll lose .4" on the width, which is better for deep snow and the inevitable brown sludge/slush anyway. Speedo will be +1mph at 65.
I haven't finished pricing, but so far they're at a small premium over cheap snow tires. The advantage is the price on cheap steel, 5x115 bolt pattern wheels which are a breeze to repaint. Yeah, I'd imagine noise will be an issue, but the similar tires I run on my old Blazer have lasted 3 years full time. I'm hoping a setup like that will last many snows.
