Of all he's heard, prepro has yet to disclose his choices and opinions in confidence.
Amateur - guilty.
That's what makes this of some merit. No experience with previous gear of note. Just a relative snapshot of time to a relative noob to this level of DACs (from a CAL Sigma II).
Prepro has generously offered time with 4) $2k+ DACs and nothing more. No agenda, no profit. Well, other than the listening experience.
Project 86 warned this would be a hard task and I wouldn't find much difference but slight preferences.
He's right. Very hard to tell. Unless you did like Chase did at the meet. Go hide by your self and listen for a hour or so with each DAC. It's almost impossible to compare DACs in meet conditions.
Just make sure both are on the same level playing field. They let your ears take it from there.