I have the 20 1.7 and the 45 1.8, for use on my OM-D, both excellent lenses. Need to fill the gap at the wide end for under $500, something in the 20-30mm (equiv.) range. The panny 14 2.5 looks like it's priced right. Seems to get good reviews. Any other suggestions? I like the looks of the 12-35 2.8 coming, but the price kills it for me.