Your speakers are awfully good, but if you want something different and more exciting a Wilson would be a good choice. I wouldn't go with a used WP 7 or 8. Audiofreakgeek nailed it, get the Sophia 3.
Wilson Audio Question compaired to Vandersteen
I have a friend that is a Wilson Audio fan and I have always liked them he is using the watt puppy 7, they just have a great punch and are very clear, also there center is awesome looking. My current speakers are just boring lumps so something that stands out would be nice. I use my speakers 80% for HT these days. I have a chance to get some at a great deal anyhow I am not sure where to start. I have Vandersteen 5a but what is the Wilson Audio model compared to the 5a's. Also I know what I hear but what are other people’s opinion between the two? Thank you in advance for any input.