Why buy an eagle if you want to go back to the sidewinder? Surely the Eagle is a 'better' ship.
Any advantage of a sidewinder over an eagle? Apart from the rustbucket charm? :S
I quickly got a rid of the eagle as seemingly the radiators were not as effective as the sidewinder's. Using a dual railgun setup, it is necessary to dissipate the extra heat contributed or you will quickly find yourself at critical temperature. I believe the sidewinder also has better hull health, and; I could be wrong on this; but more effective lateral thrusters.