Wilson speakers do a great job of revealing your electornics and cables. IMO they sound very Hi-Fi-ish and unpleasant with solid state.
That very much depends on electronics. Wilsons sound great with Pass XA or Dartzeel SS amps. Those are just two combinations I personally tried, but I bet there are many, many more available.
That beeing said - the best I have heard was the combination with a SET amp. Not because Wilsons need tubes to sound good, but 'cos SET amps IMO sound better than transistor amps. Of course, YMMV.