I have to disagree with you Markt, noise won't mask a rotation done by hand. I have an itg 3205 and the noise is really small, if I just put it on a table, the gyro value stays at around the full scale without moving more than a couple of LSB. And it makes perfect sense because why encoding a sensor data on 16 bits if the significant value is on 13 bits and 3 lowest bits are waste ? Also, it detects really well a rotation by hand, no problem.