Soliciting Member Perspectives: Levinson vs Bryston vs Audio Research


Wanting to start a discussion for which there are obviously ZERO absolute answers.  I want to hear various member perspectives on these three marquis brands of audio equipment: pro's vs con's, likes vs dislike & your emotional/visceral experiences.

Why?  #1, I think it would be fun & edifying.  #2, I am contemplating modifying the direction of my primary 2-channel system in my 'Man Cave' & your thoughts & opinions will be useful.

Please try to avoid pretentiousness, condescension & remember, these are your opinions & not necessarily facts.

Thanks in advance & I hope this proves to be as fun as I think it can be.
oldmandave
I have owned Levinson 27, 27.5 and 29 amps and 36 DAC.  All are great products and pride of ownership high.  Have never owned ARC until recently when I bought a Ref 110 amp. I have to say it is the best sounding amp I have ever owned but I like tubes.  Bryston never owned any.  The older Bryston amps were too harsh or detailed for my tastes but the newer ones much better I hear. 
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Replace tubes every year? The tubes in my LS-16 are original. Maybe they sound terrible? I don’t know.
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Would you replace them at their hour rating or when they failed? Some people change the oil and filter in their car every 3500 miles even though it is almost never necessary or even beneficial. Not questioning your approach or math, just wondering.