You've got to realise that in this hobby once you get to a certain level improvements are slight and its not always down to price but can be down to four things:
- Individuals hearing & preference (plus listening experience)
- Synergy to other equipment your using, primarily the ear/headphone put also source, amp (if any extra) and app/software. Also a bit down to cables if you can hear the difference.
- Reviewer Bias due to bribery or vested interest.
- Emperors new cloths phenomenon/Buyers guilt/fantasies; bragging rights.
Get number
4 out of the way first: Many people will believe something sounds better or made an improvement if they buy something expensive, Its human nature. Many people like to brag/show off especially when it comes to how much money they can justify spending on a leisure item, Its human nature.
Now get
3 out of the way. Read lots of reviews from a variety of sources, especially normal people who have bought or tried the equipment or reviewers who are known not to exaggerate or have bias.
With these out of the way its 1 & 2 that determine the sound quality and why you will likely see conflicting opinions. This is where trying the equipment yourself is the only true test.
No, the V30 is not better than a Hugo 2 and only the individual listener could judge for themselves if the improvement is worth 3.5 times the cost for just a DAC/AMP , the Hugo 2 will still drive more demanding headphones better.
Not sure on the wm1z as never tried one. Nearest I came to that was a ZX300 where many who own both the 1A & ZX300 say they sound nearly identical. I'd say the V30 is as good as the ZX300 and better than the X5III/ZX2 I previously had and in some respects better than the Mojo (sound stage and no electrical interference). Nearest to the V30 is Dragonfly Red but again V30 is better with DSD.
I never listen to anything with EQ. I'm happy with Auto so with my SE846's it defaults to "Normal" and with my HD660S default to "High".