Well after days of reading on the forum I'm now waiting to make the final decision and need a little persuasion. I'm still new to my D200 and have an extreme interest in macro photography. I've narrowed my choice down to either the Sigma 105mm or the Sigma 150mm which have a pretty significant price difference. I've seen some amazing photos taken with both but the 150mm obviously has some benefits. I guess I'm just trying to justify paying the price of the 150mm over the 105mm. It looks like the 1.4x teleconverter added to each is a common thing with good results which is a nice option to have down the road. I guess this brings me to my questions and opinions. Which would you go for? I could buy the 105mm now or wait a few weeks for the 150mm. If you have photos using either lens I would love to see them, especially if used on a D200! I'm thinking about trying to find the 105mm online at a rental site to try it out before buying. My only issue is the 105mm can be had for such a great price it's almost not worth renting however if I'm not happy with the minimal focus range I might be kicking myself for not getting the 150mm?