[danpen]

I spent ages agonising over whether to get the Canon, Sigma or Tamron macro in this range and eventually bought the Sigma. I'm really happy with it and have since used the Canon and the Tamron, in terms of picture quality there's nothing to choose between them.

The Canon feels like it's built better, the autofocus is quicker and quieter but it's a lot more money. I never use autofocus for macro shots and the Sigma's stood up to everything I've done to it so I think I made the right choice.

Get one, you'll love it.