The entertainment, if you are talking about the floor show type is ok. It is not as good as the huge revues held on many of the larger ships but it has a reasonable standard. One extra is that you can meet the show people around the ship. ( As you can on Celebrity now) The deck games and water-volleyball etc and really good and because you are only talking about 300 + passengers onboard it becomes a far more personal thing. On the whole the quality is there as you would expect from Silversea but the entertainment is in proportion to the ship and remember that Whisper is one of their larger vessels. You'll love it Neil Dow.
I would totally agree with these comments. Most people do not travel with Silverseas for the shows.