Thanks for sharing. The richer sound from the delrin jives with what I've read from others on the forum. I've not heard the Groovetracer delrin, but delrin has a little more cachet these days than acrylic. Clearaudio went to delrin platters, and a lot of people are using delrin for dampening purposes these days, like inside the Groovetracer RP6 suplatter, or the VPI Prime bearing cups, and the VPI screw-down record clamp.
I ran an RP6 platter on my P3-24 with a Tangospinner RP6 subplatter. I found it had more stable soundstaging, so orchestral imaging and depth was better. It has more bass, but was a little darker than the P3 platter. The P3, with Groovetracer Reference supblatter, sounded more open and more toe-tapping, but I regarded the RP6 platter as better. In both cases, I used a cork mat.
Then I got the Groovetracer acrylic platter. It has the brighter, more open sound of the P3 platter, but better bass than the RP6 platter. I also thought it had better soundstaging than RP6 platter.
In all cases, I got imaging outside the box, but the acrylic was the biggest. Some people find acrylic too bright, however.
I'm interested to hear the delrin platter, but it's a low priority right now since I'm using the Pro-Ject as my main 'table.