I own the 12th Anniversary DAC and like it a lot. I previously owned the Denafrips Pontus II with the Iris DDC and found it to produce very enjoyable sound for the money. It leans toward the warm side but it doesn’t sacrifice detail. I’d highly recommend this combo. The W4S gave up a little warmth but still maintains an analog sound with greater authority and detail.
I also demoed the T+A DAC 200 and found its hi-rez sound addicting at first but it ultimately sounded a little too digital to me.
Based on a post from @jsalerno277 I picked up the iso recover and DC blocker to enhance the W4S further - what power supply did you pair with these guys?