Audiolab, Rowland integrated - nothing in between?

Of course there is something in-between. Question is if it's worth it. I am thinking about uprading my Audiolab 8000LX integrated but even used Rowland or perhaps Gryphon are beyond the reach at the moment. How much would I really gain if I got, say, Naim or Plinius or whatever?
My Michael Green Design free resonance speakers need really good control or they become loose. Audiolab does OK but it's not good enough. And I want more resolution, better imaging, soundstage etc. Cables are Purist Audio Colossus.
So. what do you think?