The 60mm is a cracking lens, I bought mine a few years ago, but after only using it a couple of times, sold it on, I was finding myself having to get too close to the subject I was photographing at the time (Butterflies), which don't like you getting too close, as soon as you cast a shadow over them, there off, now I use my 28-105 which has half size macro on it, I'll be getting the Nikon 105mm soon.
The 60mm is a cracking lens, nice sharp images, but depending on what you waht to use it for, you may find a longer focal length lens a better option.