For the most part, all speakers designed for HiFi are "good" speakers provided they are in good working order. What you really need to determine is "what's good for you." Consider your room size, application, and listening preferences. If you are building a system, I recommend starting with speakers, then selecting complementary electronics. You will end up with entirely different systems if you are designing for a small room and listening to chamber music late at night vs. a large party room where you are playing rock music at high volumes. If you listen by yourself from a designated listening position you will likely choose something different than if you have music on as background music and are moving about.
Then there are practical considerations and aesthetics. Most of us need to choose speakers that are deemed acceptable to other family members and "fit" into the room's decor and furniture arrangement. Speakers often need to be child-proof and pet-proof. Many times it is impractical to optimally place speakers, and they must go against a wall or in corners. Often home users need something that will integrate into their home theater.
Some speakers, like the Harbeths mentioned in another post, are fairly good "all-arounders". But you still need to apply due diligence in selecting the right size and placement. If flexibility is needed, sometimes a 2.1 system with one or two subs can be easier to integrate into a challenging room.
Essentially, there are no "bad" speakers. Just bad systems.