Phono preamp suggestions; can I improve upon my Aesthetix Rhea Sig ?

Definitely will do a wait and listen approach with my current phono pre which I've owned for the last 15 years.  It's a tough question I know, but was hoping someone out there has heard the mentioned equipment and could comment. Recently upgrade my Classe power amps from their last series to the current Delta Monos.  While there was an improvement in SQ it was not as much as you may think. Thanks for comments and Happy Holidays!

Tube noise and other noise sources has been a problem with my Rhea.  Your experience and description is very useful.  I think the reason I was looking at Pass was for no fuss SS. Good to know this has been addressed in the Eclipse versions.

Thanks mulveling!  The SUT sounds intriguing as a way to lower the noise floor of my existing pre.  Never thought about that.  As I'm not very familiar with SUT brands any recommendations?  

Well the new table and cart arrived yesterday. There is quite an improvement in SQ over my VPI Aries 2 and Grado Statement 2 cart.  The first LP I played was amazing! As time wore on I became more used to the sound and it became the new normal.  I do love the sensation of that first taste of a new component in my system. The tell was listening for more than 5 hours. The Rhea does seem up to the job. The one thing I noticed the most was a blacker background with little or no groove noise. The Rhea is also dead quiet.  I'm anxious to compare to my Red Book collection via Denafrips Terminator Plus with Gaia DDC.  Will report back once cart has broken in sufficiently.

Xagwell, please report back once you get the upgraded Rhea back. I looked at that option but am a little hesitant as my Rhea is 16 years old and upgraded to Signature just a few years ago. 

Xagwell,  Thank you!  Had no idea the turnaround was so long.  I've recently done a lot of system upgrades.  New Wireworld interconnects and PC's.  I've added a PS Audio Power Regenerator which has lowered the noise floor considerably.  Also upgraded my power amps to Classe Delta Monos which has improved dynamic range, soundstage, and tone.  Then I went to inputs.  Added Denafrips Terminator Plus and Gaia DDC.  That was huge!  Made my Vinyl the weakest link.  After my turntable and cart upgrade I'm now concluding its the equal or slightly better than my digital rig.  Still need more time listening.  My vinyl weakness at this point is noise floor.  Would be very curious to hear about that when your Rhea gets back. Again thanks for your comments.  

Thank you for your initial evaluation Xagwell. When I went from stock Rhea to Signature the tube rush I had experienced went away and my unit is very quite. My primary goal is to get a quieter noise floor. Don’t know if that’s possible with tubes. My Terminator Plus DAC has a very black background  compared to my current Rhea. Don’t know if signal to noise in a phono preamp can compete with a great DAC. On the other hand I love the SQ of vinyl with a tube pre.