A warm DAC?

Just to jump on this. Does anyone have opinions on the Wavelength Proton (an older, supposedly "warm" sounding DAC) stacks against contemporary DACS? It is far more limited in decoding option, but at least a few years ago, some people still reported that it competed well with sub-$1000 dacs. Anyone got opinions on the current state of things?

https://www.audiogon.com/listings/lisa27i5-meridian-ultra-dac-rack-mount-da-converters
Ready to come down on price.

I'm thrilled to see that bo "summarized" his thoughts without addressing the OP's question. 

An update... I was able to locate and purchase a used PS Audio PW DAC to pair with my PW transport...:} Unfortunately, my friends at FedEx dropped the box and destroyed the DAC... back to the drawing board!

Used Bryston BDA-3. 
The Mytek and Benchmark DACs will be the opposite of what you’re looking for.