I just found Hubpages, so I thought I would start with the topics I am comfortable with. I understand this is not the normal, every day cameras that most people would have on hand, so I am not saying you "need" a specific one. For my jobs, I use a Nikon D4 and an Nikon D800. I still keep my D300 in my bag.
I carry a nikon coolpix and a canon g10 for personal pictures. But oddly enough, I still capture a ton of photos and video on my Iphone
Anyone looking to buy a camera. I suggest picking one up in the store. See which one feels good in your hand, which on has a menu that you like ( and understand). You can even rent cameras to try them out. Once you figure out which one works for your needs, it is the glass that really will carry you far.
Hope this helps.