They were particularly fun if you knew how to mess with the flyboys...
Park a tank inside, facing out near one end. Planes would come to get you, but would be forced into low-level gun runs directly at the frontal armor...no smoking of turrets from above.
Then, you'd simply ping the beejeebus outta them as they kept trying, until you either killed the pilot or smoked 'em good.
Good stuff, every time...and they were a safe place to run when the jabos appeared to squelch the ground fun. Just had to wait out the fuel or patience...