Is this lens good for sports and distance? [ame=http://www.amazon.com/Nikon-70-300mm-4-5-6G-Nikkor-Worldwide/dp/B00008B0Z6/ref=sr_1_1?ie=UTF8&s=electronics&qid=1283978647&sr=8-1]Amazon.com: Nikon 70-300mm f/4-5.6G AF Zoom Nikkor Lens (Worldwide), in Black: Electronics[/ame] I will be shooting several football games. Right now im using the 55-200 lens...was looking for something that will do a little better far away and still get great clear pics. Will this one be any better than what i have? If this lens isnt right for what im wanting, which do you suggest? Thanks so much.