Schubert - Over the last ten or 15 years I've owned quite a few speakers, Thiel, Proac (two pair), Soliloquy, Merlin and Devore (two pair) and never found any brand that sounded like any of the others with either tube or SS amps.
They all have different strengths and what you'd prefer would depend on your other gear, your taste in music and your hearing.
Of course, that's not a very big sample but if I had to buy again to replace the Boxers I'd go first for Devore, then Proac but wouldn't again buy Merlin or Thiel.