I'm a telephoto guy. I prefer the image isolation and quality of shooting from afar. Saying that...I read all the review, all the user feedback and after a lot of back-and-forth decision making, I decided to pull the trigger on the 100-300! I tried a 45-200 OIS and was sorely disappointed by that lens. All user accounts say the 100-300 OIS is better. I'm now building my m43 kit which now consist of the G3, GF2, 14, 20 & soon to be 100-300! I'm used to fast sharp glass from my Nikon kit, but since there is no faster alternatives, the 100-300 seems to be my only option. Is there anyone who wasn't satisfied with the 100-300 results? The 45-200 OIS I had wasn't adequate at 200mm. If I stick around 200-250mm, will I be satisfied with the 100-300 sharpness? Sorry if I'm beating a dead horse, but just want to get some fresh perspective, thanks!