Lumix GX1 arrived today - lens was bulkier than expected

The first post in this thread, which you may want to bookmark, has a very handy chart listing all or most of the micro four thirds lenses:
http://forums.dpreview.com/forums/readflat.asp?forum=1041&thread=40938009

The 14mm on eBay is a good deal. If I were only going to get one lens in addition to the kit zoom, I'd go for the 20mm pancake lens, but it does cost more.