I'm looking for a fisheye or wide angle lens for my panasonic fz20. Does anyone have any experience with these types of lenses in general (not necessarily the panasonic cameras). Out of these, which would you suggest? (All of these fit the fz20 too with the right adapter). I can get the Olympus WCON-07 for $210 (AUS) here, or a Nikon FCE9 fisheye here for $235. There is more info about the nikon here Any help will be appreciated.