I do not like the treble i hear from the current setup of rotel/MA/oppo. It could be coz of no stands and oppo in general is not a warm, neutral sounding. When we auditioned oppo along with different DACs, i didn't like the highs from oppo/CA/rdac as they are bit harsh to my ears and would easily cause fatigue in 30 mins listening.
Considering my speicific personal preference for highs and not listening to any of the DACs other than CA, Audio gd and MF, would it be a safe bet to get a EE/Rega/Audiolab etc ?
From the reviews and from various forum discussions I came across I learnt the ESS Sabre 32 based DAC's tend to have analytical sound signature.
Here is a definition of Analytical sound from other famous forum
An analytical sound signature usually refers to a neutral and detail sound. Neutral as bass to mid range is relatively flat, often gives a sense of thinness and coldness. Upper vocal, especially female, tends to get better highlighted than lower (male) vocal. Plenty of sparkles and crispiness; higher in resolution and separation but usually has medium to small soundstage.

I think you should stay away from buying a DAC without trying them.