It looks to me you are setting up to simply swap sideways. This usually means disappointment, swapping one set of strengths and weaknesses for another.
I have am very familiar with Sonus Faber Speakers and at least similar models of SIM and Luxman. Luxman will have good imaging… but it is not very musical.
If you want to plunk down your new box and think, “wow, now that sooo much sounds better in all respects”. I recommend saving up and having a good look at the Pass INT60. This is a huge step up from the SIM or Luxman. It has better midrange bloom and it has amazing rhythm and pace (musicality).. also there will be no question of power. This unit has real drive.
‘’I would take your time and save up, and buy at the next level up. Most major high end audio companies have a unit in the $10K range, and these are in a whole different category of sound.