I use a Canon 7D DSLR, but I have a NEX-5 that I use as a travel camera, and it's never let me down. It's tiny, user friendly once you learn the menus, and, if you ever want to get more ambitious with your photography, there are several NEX-specific and, via adapter, a wide range of Sony Alpha lenses that you can use with it.
Autofocus is fast and accurate. This was the only camera I took on a 3 week European vacation last year, and it never, ever let me down. Here are a couple of sample shots from that trip: