Although I am not familiar with the Running Springs Haley, I have been a very satisfied owner of the AdeptResponse for a little over a year now. All's I can say is that the improvements have been quite noticeable and enjoyable, especially in the clarity and resolution of lower level detail because the noise floor has gone WAY down.
As far as soundstage presentation...it too is markedly improved.Little spatial clues that had previously gone unheard, suddenly have poped up and make the music so much more life-like.
The Adept Response has most definitely been the best purchase I've made to improve my systems abilty to make music.
All these observations, BTW, come in comparision to what I was previously using, which was an PS Audio 500.
Hope this helps you.