I always start with feature set when determining if I want/need a change in gear. First selecting gear that meets my functional needs it then limits the options down to just a few. I then look for reviews/posts that compare the options either against each other or against something I already own. For example I plan to separate my stereo from my home theater again in the future. As such I will need pre-amp functionality that my receiver currently covers. I will need at least two outputs, preferably three as I will have amps, subs and headphone amp(s) attached to the stereo. Next I set a budget, which in this case is <$2500 to cover DAC/Pre-amp capabilities in either a combined or separate solution.
This has led me to looking at/comparing the following gear:
Benchmark DAC3 L
PS Audio Stellar GC DAC
Schiit Gungnir Multi-bit + Freya
I then create a pro/con comparison on features and feed in my subjective research on sound quality and make a decisions (not there yet with this scenario).
I will say one thing to keep in mind when reading "objective" based reviews... "Inaudible is inaudible, you don't get brownie points for making it 100x more inaudible." While I do read ASR, I feel they do a generally poor job on calling out inaudible and use some pretty arbitrary thresholds for what they consider "good" measurements.