Picked up the new Sigma 150mm F2.8 Macro lens with OS on Saturday morning from DCW for only $30 more than it would have cost me grey market.
I think this is the first one in the country!
Haven't done much with it yet, as it's been so windy and cold, but the test shots I've done with it are razor shrp, and the boke is gorgeous and creamy.
I did night-time panorama with it, and the details are amazing.
I already have the Canon 60mm macro, and it's a great lens which I use for work all the time, but I wanted something for insects and flowers and still give me a little distance between me and the subject, as you can do a lot more with lighting and flashes.
Thought long and hard about getting the Canon 180mm macro, but not having IS or OS was a deal breaker for me and it is much more expensive than the Sigma too.