Hi all, I am not a pro, but I take phography seriously. I will be travelling to Tampa area, and would like to buy a good, fast lens for portraiture to be used handheld and also in low light situations. As I also do not already have a body (used Canon equipment before, but sold all) I am thinking of buying a Canon 50D-500D or Nikon D90. I am thinking of buying something 105-135 mm f/2.0 I need some hands on info about these lenses (or maybe Sigma for better value) if any list member can provide. Thanks for all the answers. Veli Izzet Cigirgan. PS. BTW, I also need info about stores you can recommend.