Hello all. I'm interested in some information, I recently bought a Nikon D5000 to go with my Canon ES40, I've got a crummy Tamron lenses that is pretty useless. I've been given some money to spend on a decent lenses for my Gap Year next year, I'm looking at doing a-lot of wildlife photography and sports, so anything 400+ is a must, large aperture is also. I'm wondering what would be best, buying the Nikon 200-400 for the D5000 or buying a Sigma lenses, and if anyone knows any decent suppliers in the UK. If anyone has some names of lenses I can look up, that would be fantastic.