You seem to be getting plenty of advice. I, however, am a big fan of both 91106, and 91101. Both of these areas have greater access to amenities such as shops and restaurants, especially those of the S. Lake District. These areas are more walkable, and there is better access to the Gold Line Light Rail. As Tatiana mentioned Monterey Hills, and So. Pasadena, it really depends on what your priorities are, as well as where you might be working when you arrive.
If you have any questions, please do not hesitate in contacting me.