It all depends on what type of information you are searching for. With over 70 databases http://qcc.mass.libguides.com/resourcesAtoZ it often comes down to selecting the "right" database and this is often dependent on your topic.
For example, if you are searching for a topic that is psychological in nature I would recommend PsychINFO. If you are working on an assignment in an Allied Health class (Radiology, Nursing, Respiratory Care, Dental Hygeine, etc.) I would recommend CINAHL plus with Full Text. For many topics our general academic databases such as Academic Search Premier, or Academic OneFile are best.
Feel free to contact us for more specific recommendations.
Matt
Coordinator of Library Reference and Instruction