I listened to B&W speaker 683 series (an FS) and they sounded the most flattest of all speaker combinations i auditioned. (This maybe good for some listeners). Somehow, they did not have life in them and they are expensive.
If you are wiling to spend 60-65k, your better option would be to go for Dali Zensor 7 Floor stander at similar price levels without the extra stand costs for a bookshelf.
There are more VFM bookshelf combinations you can look for like:
Monitor Audio Bronze 2
KEF Q100
Dali Zensor 3