I've had several HHR's as rentals and I loved them. They are a little larger than the PT Crusier and they are comfortable cars, good for long trips and so much fun to drive! The only thing is there isn't a lot of room for 2 peoples, months worth of luggage but it will fit.

I say do what you are comfortable with. Have you checked on what insurance will cost for the car and factored that in? Is that with the monthly note manageable for you with? You will love the car.