Summary: I had this scanner for a few days and had to have it returned because many of the scanned images were skewed which the deskew option could not correct. The degree of skew translates to one edge of an A4-size scan being about 0.5 cm (0.2 inch) higher than the other, viewed portrait-wise.
Summary: Generally by the time I come to use it the driver has crashed under Mountain Lion on my mac and I can't re-initialise it without rebooting my whole machine (force quit it and it won't start again properly) Also the paper feed mechanism quite quickly started sucking through multiple sheets at once.
Summary: Bis jetzt konnte ich an dem Gerät noch keine gröberen Schwachstellen entdecken. Bin rundum zufrieden. Die Scan-Geschwindigkeit ist sehr gut, vor allem in niedrigeren Auflösungen und SW oder Graustufen.