Need help deciding between 2 completely different cameras?

As previously stated, I'm having trouble deciding between 2 cameras. One is the Sony Cyber-shot DSC-TX66 and the other is the Nikon P510. I don't necessarily need a point-and-shoot camera because I have my cell phone for that but the Cyber-shot has 18.2 megapixels, whereas the Nikon has 16.1. I don't know much about cameras but I was always told megapixels are very important. And the prices don't matter much; I can get both cameras for $300. Any help would be greatly appreciated.

Cyber-shot DSC-TX66 - http://store.sony.com/p/Sony-Cyber-shot-Touch-Screen-Camera/en/p/DSCTX66

Nikon P510 - http://www.nikonusa.com/en/Nikon-Products/Product/Compact-Digital-Cameras/26329/COOLPIX-P510.html
>>> Need help deciding between 2 completely different cameras?

Nikon Coolpix s4300 taking solid white pictures?

So, today, I took my camera outside and everything was fine. The lens then got cloudy (my assumption is from either accidentally leaving it in the car for a couple hours when it was cold or taking pictures in the fog the other night) and I left it alone for a couple hours so it could clear up.It did, but when I turned it back on, it took normal pictures for a while and started taking nearly solid white ones. How do I fix it?
>>> Nikon Coolpix s4300 taking solid white pictures?

Nikon Coolpix s4300 lens cloudy?

I got a Nikon Coolpix s4300 for Christmas from my boyfriend, and never had any problems with it up until today. I took it outside and was taking pictures, and all of a sudden, the lens turned cloudy. You can see it from the outside and it looks white. I'm thinking it could be condensation, but I don't ever remember getting it wet. The only thing I can think of that might have caused it is leaving it in the car (it was in a case) when it was freezing cold, but again, it never caused any problems before.It was only in the car for a few hours. I do have a warranty on it, but I was wondering how I would go about fixing it.
>>> Nikon Coolpix s4300 lens cloudy?

Do you like my photos? Itt's about music, jamming?

Http://www.flickr.com/photos/gabevecs/8376356792/in/photostream/
http://www.flickr.com/photos/gabevecs/8375283611/in/photostream/

I shot with an ordinary Nikon Coolpix S9100 what is a Point and shoot camera.

What do you think?
>>> Do you like my photos? Itt's about music, jamming?