I am trying to shoot more sports and am looking at getting a used tele zoom lens. Obviously I need a 2.8 maximum aperture. I am a college student putting myself through school so price point is very important. Do you guys have any advice? Are there real advantages between the one-touch and two-touch? Is buying Nikon brand going to make a huge difference vs. Tamron or other 3rd party? I read that VR isn't important when shooting sports, is that true? Any advice or comments would be appreciated