A "generalization" like this, however, is absolutely no substute for auditioning and narrowing your choice to speakers that you personally like the sound of, which I suspect was really John and Tvad's point.
Shadorne
Yes, now you have at least my POV nailed. Keep in mind, that I myself own speakers that are 89 db efficiency. However, I have heard many excellent higher efficient speaker designs as well.
Generally, there are no generalizations in the audio hobby. No one else can tell you what sounds good to you, you just have to listen for yourself......sorry.
John