This camera has been a bit of a dilemma for me. It is a very convenient little package with a feature set that sounds amazing for a $200 camera.
The problem i have is with its aperture control. In EXR mode, it selects open aperture for the vast majority of my shots. This results in images that are beautifully sharp in the middle but soft and fuzzy around the edges.
In aperture priority mode [my preferred shooting mode], my only choices are open aperture, F7.1 and F10. The F7 setting is okay at wide angle but when zoomed, it becomes too small for anything but bright sunlight.
As a result, I have replaced the 660 as my default travel zoom camera. Although I occasionally take it out, but end up being frustrated again.