I own a Canon 400D (just over 2 years now) the kit 18-55mm lens, a Canon 28-135mm Ultrasonic IS (which I'm very impressed with and which stays on the camera most of the time), a cheapo Canon 70-300mm USM which does the job but isn't great. All lenses have UV filters mainly for protection. Just been reading a good review of a Tamron 18-270mm lens which would make all of my current lenses obsolete!! Also own an aging Sony P150 which is a great little camera for nights out and when trying to travel light and somewhere in the back of a cupboard I have an old film Canon AV1 dating back to around 1981. Like others here I spent a long time trying to decide whether to go Canon or Nikon but in the end the Canon felt slightly more comfortable in my hands.