I've set aside around $1000 (slightly flexible) for a DSLR body and lenses. If you were to start again with $1000, how would you spend it? My only criteria are Canon or Nikon (pretty firm about this), and I would like to be able to shoot sports, so some reach/speed would be nice. Other than that, used/referbished is fair game as long as I can actually find it. Should I spend mostly on a body, and slowly acquire lenses, or start with a decent lens and upgrade the body down the road.