The first time you write texts, the touchscreen was somewhat sensitive to my taste. Even without contact, a letter was typed on the virtual keyboard. In addition, it took a little long until a wireless connection came. The much-discussed freezing in WLAN operating also disturbed from time to time.
The good news: Since installing the new firmware (2.3.3) via Kies, all are (so far at least) solved these problems !!
The positive other points were already discussed in many reviews.
Thus, a clear purchasing decisions and super price / performance ratio