I had my heart set on the Sigma 105mm macro lens for Olympus. Now I find out it is discontinued and I won't be getting one. I like taking macro pictures and I like taking macro pictures of bugs. Not being the most quiet, graceful person I wanted the 105mm so I could keep my distance but still get great shots. Now what? What should be my next choice for a macro lens where I can keep my distance from bugs/insects/butterflies and still get great pictures? Thanks!