Instead of a tube DAC, there is something organic about an R2R DAC. I've had a Denafrips Terminator 2 for the last three years and for me it's been a game changer! The rest of my systems far out classes in price but having a really good source is the cornerstone of any good system. Upgrading the source to Aurender N100, good power cables and interconnects and finally isolation all made significant improvements. With the T2 and the rest of the system it produces a wide and deep soundstage with tons of detail while still sounding organic (non-digital). My Sopra 2s completely disappear and I'm just pulled into the music - very engaging.
There are a lot of great options out there and if you're looking for something "different", this may be one of them without spending $10k.
Good luck and I'm interested to hear which direction you go.