I really can't decide If I want the Oly 9-18 for my G1 or not. I have the kit lens, the 200 and the 20mm but not sure if I want, or even need the wide angle. At the moment Amazon uk are doing it for £460, which is about as cheap as its going to get thanks to impending uk tax rises, so it's kind of now or never. I do mainly street/city photography and not sure wether to just stick to the 20mm which is my main lens or get some wide action. Thoughts/inspiration?