DAC to eventually replace my Simaudio Supernova

My Supernova is aging well, but I really am interested in jumping headlong into an R2R dac, initially using the Supernova as a transport. 

I like my music presented on the warm side of neutral, with a mountain of bass if it’s in the recording. 

I’m considering the Halo Spring KTE, the Denefrips Venus, and Perhaps the Schiit Yggy. I like i2s input of the Holo Spring. I wish the Yggy had dsd input.

The rest of my system consists of SF Cremonas, Classe CA-M300 amps, ARC LS27 preamp.

Would any of the above dacs be a considerable improvement over the Supernova?