The Panasonic LX3 ships with Silkypix, and the Leica D-LUX 4 ships with Capture One. However, if you want to extract the maximum detail possible from your new camera's RAW files, consider using Raw Therapee (latest beta version has LX3 support) on Windows/Linux or Raw Developer on the Mac. The results may surprise you!

Raw Therapee also includes tools to correct CA and lens distortion. Henry Stahle has shared the following prescription for addressing the LX3 distortion in Raw Therapee: "The barrel distortion requires a -015 setting to correct the 24 mm lens. I just made a 24 mm profile and saved it."

Links:
Raw Therapee
Raw Developer