What to upgrade from Bluenote Koala? $3500 ish

I am thinking about upgrading from my BlueNote Koala Tube CD Player. I've done A-B comparisons to Audio Reseach CD3 MKII, BAT VK-D5 and Lector CDT.7. Each of those players resolved detail in a more musical way to my ears, and had a deeper more hologaphic soundstage. The Bluenote Koala is very dynamic, but has a rather forward solid state sound to it, albeit very musical. It is wonderful, but when I did the A-B tests, it was bested. I listen to jazz, Singer/Songwriter, blues, Rock. Artists such as: Keb'mo, Nora Jones, Diana Krall, Bruce Cokcburn, Amos Lee, James Blunt, James Taylor, Sting, Aaron Neville, Larry Carlton, Rippingtons, Russ Freeman, Brian Bromberg etc. Hence my search. I'd like to spend no more than $3500 or so. Here is my short list, new and used:

Cary 306/200 (Can't afford the 306SACD)
Cary 303/300
Audio Research CD3 MKII
BAT VK-D5 0r VK-D5SE
Resolution Opus 21
Rega Saturn
Dare I consider the new Shanling CD-T1500 or Raysonic CD128

My System:
Audio Research Vsi55 Tube Integrated
Proac Response 3.5 Floor standing Speakers
BlueNote Koala Tube CD Player (Sovtek 6922's)
Acoustic Zen Satori Shotgun Speaker cables
Acoustic Zen Silver Ref II IC
Running Springs JACO Power Conditioner
Wireworld Silver Electra 5/2 PC on BlueNote Koala
Black Sand Silver Ref V/Oyaide 046 PC on ARC Integrated
Oyaide XXX AC Wall socket with Carbon fiber Mounting plate
FIM Isoltation roller blocks under components
Dedicated audio Acrylic Cable lifters