Hi folks. I have decided to upgrade from my point and click camera and have research and found the Nikon D80 to be what I like most. What I am not sure about is which lens I need to buy to go along with it. I have three active boys who I want to be able to photograph and be able to blow pictures up to poster size. I need something close to mid range distance and then also feel like I need something that will go 300mm range. Is there a big difference in manufacturer quality? Would I be best served staying with all Nikon lens or would some of the other brands do the same and be cheaper?