I have a Nikon D5000 with the 18-55mm AF-S VR kit lens, and I am looking to get a longer zoom for an opportunity to shoot some pictures at my daughters dance recital. Conditions will be dancers in a dark high school auditorium with stage lighting. I can get within 5-10' of the stage, and the stage is approximately 10-25' deep. I can't use a flash. I will be hand holding the camera from my seat. I have had moderate success in the past with my bridge camera with a 38-380 "equivalent" lens. Hard to get enough light to get the shutter speed fast enough to freeze the motion though. I want something that will auto-focus on this body, so I am looking at the AF-S models probably with VR. My first thought was the Nikon 70-200mm AF-S VR model for approximately $200. I have looked at this lens briefly, and based on my experience with the bridge camera, I felt that I would like a longer zoom. After doing a little research I found the Nikon 70-300mm AF-S VR model for approximately $540. The Tamron/Sigma models are available for considerably less (under $200). They will auto-focus, but don't have VR. The 70-300mm is a FX lens, so I believe it would be like a 105-450mm on my DX body. Seems like that would be a good range. I have seen a number of comments here indicating that the "cheap" 70-300mm lenses are not worth it. So my question is, what is your experience with the Nikon 70-300mm on a DX body and is it worth the price premium over the Nikon 70-200mm or the 70-300mm from Sigma/Tamron? I don't want to spend more than $550... What would you recommend for I want to accomplish?