alexvaughn: This is a very detailed review, and plenty informative if you're looking to buy this camera. I actually got the camera based on this review and the opinions in the forum. What better place to go to for camera-related stuff than DPreview?
I disagree with the non pro use comment - I work for a large newspaper in Europe - I use this as a back up to my NikonD800 and Mamiya RZ67 when street photo style is needed for true look . Liecas are not so expensive as you think - try hiring one. That said I would only replace the X20 with either Sony R1, Sigma DP2 Merrell .