I have the D40 and the lense that came with it is the 18-55mm. 3 months later we bought the 55-200mm. Since our anniversary is coming up I told DH we should get the VR 18-200mm lense as our joint gift and a flash. So now my question. I am going to see if I can trade my 55-200mm but should I also trade the 18-55mm or should I keep it incase I want to upgrade the camera and I could possibly sell it as a set instead of just a camera body? Does this make sense?

Also, which flash is a good one to have that isn't to $$. I looked on the B&H's website and their are so many and I don't really understand the difference between them all.