Hehe, E520 is so small and light. My set up is very light as well. Even though there is some compromise with image quality like bokeh and noise level, I found the set up making photography so much lighter weight and enjoyable.
After all, km or k2000d is something tempting for me. I just have enough heavy set up.
E520 with an Oly 50mm f2 macro is like a point and shoot. I could do any shot with it with fantastic image quality.