I do think sound preference is personal, I haven't heard Levinson or Krell. I did heared some Macs, but the sound is just not my cup of tea. I really don't understand that why people regard mac are so high premium brand. I did agree they are premium since middle 80's. But their early generation SS stuff (70s), they were not even sold as high price as Sansui (correct me if I am wrong). Another high end brands today suffer that they lack a product which can let people experience. Not like Pionner SX-1980, people can really get experience from lower model and dream to pursue it. Mark Levinson usually had lower sibling Proceed let people experince their house sound, but proceed was long gone too. Does Krell have lower sibling?
Another thing, do we really have a whole system which let us hear the 10-30% audio improvement with huge price increase in amps?
In used market, do I really want to spend around $1000 into Krell and may later find out I don't like it sound at all? On the other side, I can buy Pionner sx-850 for $250 and experience it's sound and may later find I like it very much. Besides, those Krell and Levinson rarely popped up locally since they are high end.
And I do wish you gentlemen let sleepers sleep!! If more people buy popular brands with higher price, there are few people compete with me in sleepers. Haha, just my evil thoughts!!
Cheers, we all like this hobby!!!