Well, I'm not telling, but these are the 4 that I use most often.
The smallest is the Canon PowerShot Elph 300 HS. "HS" stands for high-sensitivity, and improves photos taken in low light. It is a wide-angle camera and has a 5X optical zoom, with a 35mm equivalent focal length of 24-120. Since it's so small, I usually have it in my pocket for when I happen upon "blog fodder."
A little bit bigger, thicker, and heavier is the Canon PowerShot SD 4500 IS. It will still fit in my pocket, but has a 10X optical zoom, a 35mm equivalent focal length of 35-350.
The lens is a lot bigger than most of the other point-and-shoot cameras, and I think it takes some really sharp pictures, even when zoomed to 10X. This photo was taken from the top of Magic Mountain in Moorea, zooming in in the oldest church in French Polynesia.
I bought an underwater camera for the trip to the South Pacific, the Canon PowerShot D10, with a 3X optical zoom. It's also good for kayaking or rainy weather.
I got some great snorkeling shots.
My only complaint is that the color of the camera looks too much like a fish, and I almost lost it to this guy in the Cook Islands. Fortunately I had it tied to my wrist.
As you can probably tell, I am VERY partial to the Canon point-and-shoot cameras. I think they are the very best around. But on the SLRs, I go for the Nikons. This is my newest addition, a Nikon D3100. It's an entry-level SLR, but just fine for me. It's lighter weight than the better SLRs, and I am more likely to take it along. So far I only have one lens for it, but I'm working on getting an all-purpose wide-angle/telephoto lens.
In addition to the better quality photos the SLR takes, you can also put filters on it, like the polarizer I almost always use, to make the sky look better and reduce reflections.