Take a look at
http://www.bhphotovideo.com/bnh/cont...=148526&is=USA
It's a Sigma 105/2.8 Macro. A friend of mine has this lens and I've had the opportunity to use it a couple of times. It's incredible! Solid build, works smooth as a Rolex and is incredibly sharp. Tha Macro mode is 1:1. And it's only $369 at B&H.
I have a 18-55, a 50/1.8II and a 90-300USM. The Sigma is better in all respects.