Which macro lens makes most sense for you depends on what kind of macro you do. I assume you are shooting with a crop sensor camera, or you wouldn't be interested in the 60mm. I do as well. I have both the 60mm and the 100mm L. Both are fabulous lenses, but they are good for different things. I almost always use the 100 for bugs now that I have it because of the extra reach. I did lots of bugs with the 60 when that was all I had, but it is harder. For flowers, I almost always use the 60, because for that purpose, I find the extra reach of the 100 a nuisance. When I bought the 100, I thought I would sell the 60, but because I do so many flowers, I can't part with it.