There are lenses I've always been curious about, but never had the nerve to purchase for various reasons. I'll start with a lens I always think about - the Panny 7-14mm f/4.0 wide lens. Primary reason I don't buy it - No OIS for my Panasonic bodies. Secondary - Cost Tertiary - No ability to attach filters 12mm Olympus Primary reason - cost Secondary - I have the 14mm f/2.5 Panny Olympus lenses (all but 45mm 1.8 which I do have): No OIS for me. What are some of your reasons you haven't pulled the trigger? Having fooled around with micro 4/3rds for about 6 months now I would say my favorite lenses are the 25mm f/1.4 H-X025 and the 14mm f/2.5. Also, I'm surprisingly using the old 14-50mm f/2.8-3.5 for video more than I thought - it's a shame the OIS is so noisy.