Update from me - I'm returning my LX3 (just upgraded from LX2 a week or so ago), and purchasing a GF1. I hope it's a good decision. I just couldn't quite get the high iso performance I wanted from the LX3. I wasn't expecting too much, but I like to shoot at 400 quite a bit. That's about where the noise really starts to come through in my experience.
The LX3 is a great little camera, no doubt. I love the form factor, especially with my CV 25mm optical viewfinder on top. But, my experience with the G1 tells me the IQ will be worth the upgrade to GF1.
I still miss the ability to manually zone focus on the G series, though. Hopefully that won't be too bad of a tradeoff.
I think that the G1 and GF1 will be my full travel kit for the foreseeable future, at least until I hit the lottery and can buy a M9...
Reed