Well, I pulled the trigger on the 150-500 
Tried it at the store and the autofocus was working just fine, although the OS failed to impress me. It was a rainy day so I just tested it taking a few pics inside the store, mostly to see if the AF was working properly, which it did.
It did not feel as heavy as I expected, although I will have trouble handholding at 500mm until I really get used to the lens. It's going to be yet another clouldy day with 60mph gusts so I will not be able to play with it, but overall I think I will be happy with it. Thanks everyone for the feedback!





