I don't know about the Dali's, but I recently bought some Wilson audio Sophia 2's and I adore them! I also purchased them on the second hand market, with out a proper audition. Mine however were factory recertified and they looked as if they were new. What I do know is that Wilson speakers are relatively easy to repair, and the parts are not ridiculously expensive. If the grills or the foam front panel ( diffraction pad ) are not in great condition, you can install these items yourself, and they're available from the factory. The same can be said about the drivers and Resistors inside. This may require a local technician, or some very careful work if you do it on your own, but still repairs can be made with a reasonable amount of cost and effort.
As for the sound, they are excellent, with plenty of bass. The reviews can do more justice than I can, but I love them!
good luck
As for the sound, they are excellent, with plenty of bass. The reviews can do more justice than I can, but I love them!
good luck