PS Audio PMG Signature Preamp or BHK Signature Preamp or Bryston BP-19

I have only heard / owned the BHK preamp.  It had chronic noise in one channel that would not resolve with tube swapping, etc etc.  It is gone now.  I don’t feel the PS products are on par with many other comparably priced items.  But, could be completely wrong in respects to their new preamp.

Brystons are built like tanks, but to me are a bit lean or thin sounding.

Not what you asked, but Audionet preamps are magical, and opened my ears to true high end sound; much more dimensional and enveloping.  What is your budget?

Thanks for your response.  By budget is $7000 tops. I have the BHK and PS Audio  will give me $3000 towards the PMG.  Funny that you mentioned noise in your BHK, because mine is at PS Audio now for service due to noise.  It has a low level noise that is a constant fluttering sound.  

What specific improvements are you looking for?