Justin,
Having heard both extensively and owning one(Thiel), I can say that they are different flavors from the same pot. Each has different strengths, both are excellent speakers. The Thiels excell in detail and transparency. They are a little less dynamic and a touch bright. The Dunlavys excell in coherence and soundstaging. They are a little grainy compared to the Thiels and get congested sounding at loud volumes. I think that the Dunlavys are a lateral move(which may be more to your liking,I don't know) than an upgrade. You need to go listen to them along with your amp and cables. Hope this helps. Enjoy listening.
Having heard both extensively and owning one(Thiel), I can say that they are different flavors from the same pot. Each has different strengths, both are excellent speakers. The Thiels excell in detail and transparency. They are a little less dynamic and a touch bright. The Dunlavys excell in coherence and soundstaging. They are a little grainy compared to the Thiels and get congested sounding at loud volumes. I think that the Dunlavys are a lateral move(which may be more to your liking,I don't know) than an upgrade. You need to go listen to them along with your amp and cables. Hope this helps. Enjoy listening.