Are you looking to replace the Aveo? Or are you looking to go ofroad? Personally, I wouldn't take the Patriot offroad. I'd probably also go with the FWD version as the extra weight of the 4wd will ass complexity and weight. They state it only gives you one point on highway, but I would assume the 0-60 would be better and in actual real driving, it would be as well.
The Caliber never really lived up to it's expectations as a replacement for the Neon. The PT Cruiser is going to live on for another year. I'm assuming, it's actually making money for them. They don't have anything to compete with the Chevy HHR otherwise.
I had to buy a new car, I'd pass on all four.