Some people consider the Yggdrasil to be one of the absolute best DACs available, so recommendations really depends on what you personally might consider a noticeable improvement. Two of the three DACs you listed are in a different direction than the Yggdrasil, in my opinion. But is that why you thought they might be good options to audition? It's hard to know what "smoothness of the midrange" means exactly.
For what it's worth, these are the DACs we carry and recommend that are also within your budget: Lumin, RME, Prism Sound, Bryston, Devialet. Plus our own Neko Audio D100 Mk2. For R2R, I'd suggest looking at Soekris. If you want something with built-in room correction, there's the Trinnov ST2-HiFi.
For what it's worth, these are the DACs we carry and recommend that are also within your budget: Lumin, RME, Prism Sound, Bryston, Devialet. Plus our own Neko Audio D100 Mk2. For R2R, I'd suggest looking at Soekris. If you want something with built-in room correction, there's the Trinnov ST2-HiFi.