I shoot a lot of soccer with the Tamron 70-200 2.8 with a D7000. It's a nice lens for less than $1000. In daylight it is great. Under lights it still does pretty well with the ISO bumped up a bit but I think that would be the case with any maker's lens. I sit next to a guy at our local professional soccer club matches who shoots this same lens with his Canon DSLR and gets good results.

For general and travel shooting I also like the Tamron 18-270mm PZD lens. Very light and small lens so it is easy to carry around. I think it's about $600 or less these days.