Hi - I am adding to my kit and cannot make up my mind on what lens to get next. My kit includes the following: Nikon D300s Nikkor 17-55mm f/2.8 Nikkor 70-200mm f/2.8 VR1 SB600 Extra battery Two 8gb Extreme III Sandisk SDHC cards I can only add one more lens at this time, under USD 1,500. My key subject these days is my 2 year old girl, but would also enjoy shooting Macro. I am torn between the following: Nikkor 300mm f/4 (as I find 200mm short at times when taking photos of my girl from a distance, although, having this and 70-200 would make it really heavy to carry) TC1.7 to couple with Nikkor 70-200mm (will it make my 70-200 a mediocre f/4.8 lens? - attractive due to low weight and high portability) Nikkor 105mm f/2.8 VR (has only Macro value for me, not really a value-add for potrait) Nikkor 50mm f/1.4 (f/2.8 struggles in really low light and I do not really like using the flash) I usually find lens choice questions vague, but here I am, asking one myself. If you are in my position, what would you go for? Thanks for taking time out to answer.