Anyone own one of these preamps ?

I’ll just throw out the Spatial Audio Raven because it’s in his price range and will likely be a substantial across-the-board upgrade from the P5, and they offer a generous 45-day return period that’s a nice option to have.  There’s also the Backert Rhumba or Rhumba Extreme that also offer a return policy and very worth a look. 

I just want to support what @stevehardy1 said in his earlier post. The PS Audio PMG Signature preamp is wonderful and would be a great addition to your friend's list. This preamp is transparent, dynamic, sweet, and non-fatiguing, and there are many strong, positive reviews online.

It is an interesting connection to your friend's Parasound gear that Darren Myers, the engineer/designer of the PMG preamp, was lured away from PS Audio to Parasound after he designed the circuits for the PMG pre.

Message received on the PS Audio.   It’s a solid contender IMO and probably fits better on his short list than one or two of the others.

Thanks all.   

If you were to use batteries made by Lirpa Labs in the remote, that alone is a complete game changer.  Try it and report back. 

I own a Herron VTSP-360.  It's very dynamic and detailed, without being overly so.  It's very neutral, and does not sound "tubey".  More of a "straight wire with gain" preamp than one that will sound a certain way.  

I've heard Anthem preamps, but don't consider them in the same league.  IMHO, room correction is for home theater, but to each their own.  No experience with the other products mentioned.