I'm looking to start my flashlight collection (like I need another hobby ), and a friend has a new in box Surefire A2 LED/Halogen which I gather have been replaced buy the LED/LED A2's. It has been removed from the box, but includes the box, and paperwork which is all pristine. He wants to sell it. What should I offer him for the light, and is this a good start for a collection? Thanks.