Streamer Comparison and Suggestions

I am considering options for a new streamer for the specific purpose of improving sound quality as a Roon endpoint feeding a DAC.  

The set-up:

• networked server/Roon core in a separate room
• connection to my main system using fiber, a converter and LPS
• very short Ethernet cable into dual Bonn N8 switches
• Network Acoustics Ethernet cable then muon filter
• Metrum Acoustics Ambre Roon endpoint/streamer (currently)
• Variety of DACs having USB, S/PDIF, and AES/EBU input options

The Ambre is a Raspberry Pi based device with internal LPS and femto clocking.  I am curious whether some of the more expensive, more well-known streamer options may result in improved sound quality as a Roon endpoint feeding my DAC - which is my only goal.  I intend to continue using Roon to control Tidal, Qobuz, and my server stored music files so the addition of fancy touchscreens, on-board storage, or optional player software will not affect my decision unless the device also offers improved sound quality.  

Streamers I have been considering are in the $5-8K price range and include:

• Sonore Signature Rendu SE (optical or otherwise - USB output only) $5,300
• Innuos Pulsar (USB output only) $7,999
• Auralic Aries G2.2 (lots of flexibility) $6,099

Thanks for any suggestions and specifically any comparisons between the streamers listed above.