C50 or C40

[Emilio]

I want to buy one of these cameras, but I’m not sure which one. C50 is brand new, and still has a price, C40 could be found for a good price. I need the advice is it worth to pay 100$-200$ more for just 1M pixels more or not. I would like to have nice pictures, sharp, but 4M could be enough. I also heard that C50 doesn’t have noise reduction like C40, and all in all I would like to hear some opinion about this two cameras. Specially, comparison in low light.