I don't own any of these lenses but the 16-45 and Sigma 17-70 are both on my drool list. If you haven't already looked, you should check out the lens review sections contained in the Databases drop down menu.
From the lens review databases, all three lenses are highly rated and would be a good purchase. All you need to do is pick the zoom range that best fits your needs. It appears than none of the three lenses you have listed have aperture rings. The only way they will work on your Me is wide open.
Tim
Last edited by atupdate; 05-05-2011 at 03:19 PM.
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