I currently have the 18-55mm f/3.5-5.6G ED II AF-S DX Zoom-Nikkor and the 55-200mm f4-5.6G ED AF-S DX Nikkor Zoom These lenses do a good job for what they are but they are giving me some frustration. Coming from a Canon IS S@ with a 500mm equivalent the 200mm is short. Switching when out shooting is a pain and the 55mm point seems to be at a line where I feel the need to do it more than I'd like. I've looked at the Nikon 18-200 but its not cheap. I've been looking into the 18-105 and maybe a 70-300 but thats not cheap either. What lenses would you guys suggest that would help without putting me into debt?