So, the prices on both of these seem to be coming down. I am well aware of the quality/sharpness difference between the lenses and the stop differences. What I plan to use the lens for is mainly indoor pictures for parties, dining with friends, and the occasional night photography. I guess the question is, for these purposes, what has the better FOV? The reason I ask this is becuase I would be concerned that say at an indoor party that the 20mm might night be wide enough. Anyone with experience with both would be appreciated. Which one focuses faster in lower light on the E-P1? Usually at indoor parties things don't happen fast, but I don't want the camera hunting either. Any advice would be appreciated. I'd like to keep the thread limited to the two items because I know that stop differences and "sharpness" differences can get heated. The 17mm looks sharp enough for most of what I need and I don't mind the stop difference.