I have discovered some GOOD things about the camera, garnered from various comments from AC members and Moto's forums ...
In the stock camera options:
Check store on SD card (not internal storage)
Mode: Choose the "hand" - steady
Move the brightness slider SLIGHTLY to the right (brighter)
Use auto flash when you want flash but turn it off when there's enough light (flash tends to wash out colors)
AND most important (that I had to learn the hard way) ... Aim at your subject and wait ... until the white corner square turns into a full square and then turns green. At this point, the camera has focused and adjusted the exposure. THEN, click. Takes more time than it should, but at least it works. Experiment with other modes besides "auto," which seems to be a culprit.
Of course, most already know you can move the little box to whatever you want the camera to center its focus/exposure, but still be patient, wait till green, click.
I got some pretty impressive results from this combination. No 3rd party apps, either (I uninstalled Vignette, which didn't seem to make a lot of difference despite all the available options).