Originally posted by twitch I think it's the other way round, the D-LUX5 is a Panasonic LX5, which makes it a more expensive camera with much smaller sensor. The RX100 is going to have far better IQ for cheaper.
Still, its a Leica. Seriously, that is one camera name that sells. Most of my physician friends wouldn't know what size the sensor was in their camera if you held a gun to their head, but they would know that a Leica is a high-end piece of kit.
But I see your point. The sensor in the RX100 is much larger.
What about the The Samsung EX2F? It's magnesium-bodied and has a 12.4MP BSI CMOS 1/1.7" (7.44 x 5.58 mm) sensor and an f1.4 24-80mm lens, fully articulated LCD, etc. ISO sensitivity can be extended up to ISO 12,800 and it has a hotshoe. The 'F' in the model name designates WiFi, and includes Mobile Link, Remote Viewfinder, Email and Auto Backup.