In a few weeks my girlfriend and me are in America. We need to rent a car for our trip from Chicago to New York.
I'm not sure which alternativ is the best for us. Maybe someone of you is able to give me some advice?

At the moment I have got 3 reservations:
- GXAR (Audi A5 Sportback) at Alamo Midway Airport
- GXAR (Audi A5 Sportback) at Alamo O'Hare Airport
- XCAR (BMW 5 Series) at SIXT O'Hare Airport

Is there a difference between Alamo Midway and O'Hare? Any suggestions which one is better? Is there a greater choice at O'Hare?
If it is important: we will be picking up the car on a monday at 11 am.

We don't want to end up in a big SUV. We are happy with a comfortable sedan.
I'm looking forward to every advice you have for me!

Thanks alot
Dirk