I think it all depends on your equipment (alas, everything matters at this level of performance). I saw a similar effect going from Hugo2 to DAVE: some headphones hit a scaling limit. As is our curse in this hobby, when you have any significant equipment upgrade, it starts an upgrade wave that goes through your whole chain. The Blu2 is particularly striking (at least for me) in the clarity it presents for where you need to focus your energies. Between Blu2 and DAVE, I am ~80% through replacing everything else in my system to take advantage of that magic.
In general, if your headphones are able to really take advantage of DAVE, you'll hear significant lift when you add a mScaler (you'll be amazed). In my case, that includes Focal Utopias, Sennheiser HD-800's, MrSpeakers Closed Aeon Flows, etc. (the later two especially are my go to cans with BluDAVE).
I heard significantly more lift with the Omegas (and I've heard even more lift with my Voxativs), but that just highlighted for me what is possible with the source equipment. I'm VERY eager to audition HEKv2s/Abyss Phi's/LCD-4's and some of the other headphones that others have recommended (I have a standing open invitation to owners of same in SoCal to drop by for an evening of nice wine, great music, and mScaler