What do you look for in a pair of speakers?

Hello everyone! Just thought I would find out what everyone thinks on this subject. I know there a lot of opinions out there and personal preferences. I like a speaker to go loud at least 100db and still sound good. In my opinion if they can't reproduce music at concert levels whats the point! Also I like a full range speaker that does not lack bass and has good staging. What do you prefer and why?