I just got a Sony Nex-5. It is OK
The body is about the size of a LX-3 but the lens is bigger as it has a new Sony APS-C 14mp dslr sensor. It handles very nicely and is very easy to use if you don't mind the menu-based interface (you get used to it).
I used a Lumix GF1 and Olympus EPL-1 and the Sony has a lot of advantages over the micro 4/3 cameras, IMO, not the least of which is it is smaller, lighter, and has much better high ISO performance.
Here's a couple of shots using the panoramic mode from Searle Pass on the Colorado Trail...
