Since it has roughly double it's original horsepower, that sweetens the deal up a bit. Still, I don't know that anything short of an honest to goodness supercar would compete with the Max for sheer driving enjoyment.
You're right, it is a pretty good toss-up. How confident are you that the wife would "get over it"?
And apparently the "SS" cobalt puts out either 170, 200, or 260 hp depending on which "SS" it actually is, since maybe GM finally got the picture that 170 horsepower does not count as super sport. Still, at least from what I've experienced the cobalt is a total POS car. I've driven a bottom of the line one and it was an absolute rattletrap, even brand new. On-ramps to the highway required flooring it, and my foot was dangerously close to the floor on even the slightest grade. Handled like poo-poo and just the overall interior quality was pathetic. Everything you touched felt like it would snap off....overall extremely "cheap" feeling.