Well, I chose Telharmonic over DPO. I saw Telharmonic as a challenging VCO that required focus and attention to control in a musical way. Honestly, I sometimes struggle with it. If I invest time and focus then I am rewarded. If I hurry to include it in a patch then I am likely punished. I wanted confrontation and frustration as drivers to improve.
I have not owned DPO, so I know only what I've gathered via demonstrations and videos. Since I own two other large, complex oscillators, I can't justify adding it to my current layout. It presents as a very capable and versatile tool clearly designed as a complex sound for the Make Noise system. Down the line, if DPO v2 is released then I'll likely give it a serious look. I'm a big fan of Make Noise and most everything they do, but HP is prime real estate.
-mowse