I bought mine from ebay
I do not know what brand.
The "flowering" (a term I've borrowed from old CRT tech) is that the CCD gets flooded somehow. Something that happens surpricingly easy.
About the rounded left edge; it seems like the CCD is not placed 100% in the center.
Also the LED's that will help when its really dark in short distance seems to give a "corona".
Bottom line: This CCD is much better than the CMOS I first bought, but there might be even better around.