Currently I'm shooting with a D90, tamron 17-50 2.8, nikon 28-200, promaster 200-400, and a tamron 28-105 2.8. I'm planning on trading the 28-105 since it weighs about as much as an Oldsmobile deuce and a quarter, but I can't decide which lens I want. Based on what I already have, would you pick a 90mm tamron macro, a tokina 10-17, or a shorter prime? I love shooting wide angle and I think fish eye would be fun, but I can't help but wonder if the macro bug will bite me. What are your thoughts? What else should I consider? Thanks in advance for your help.