^^Good advice.
I have the 65mm, 100mm and 180mm and for macro, use them about 95%, 0%, and 5%, respectively. Everyone is different, have different styles and enjoy shooting different subjects, so experience and opinions will obviously vary (I prefer being up close and personal with the 65mm). Usually, when out in the field I shoot with the 65mm and it can be a pain for me to bring along the 180mm just for the occasional larger subject, not to mention needing a different lighting setup as well. This certainly, in no way, speaks for the quality of the lens - it's exceptionally sharp and well built, although the AF can be a PITA at times. I'll use it for portrait work every once in a while, but it really sees little use, so will probably end up posting it up on here.