I'm bummed :(. I did an ABX test and was able to get 15/15 on 2 songs between FLAC and V0. The songs I used were Vienna Teng - City Hall and Animals As Leaders - CAFO. My equipment is just my motherboard audio (Realtek ALC898) speaker output to a pair of Audioengine A2 desktop speakers. The key is in the cymbals and "shhh" sounds on Vienna's vocal. To be honest I spent a good 10 minutes on the first A/B, but once I found certain parts of the song that were heavy in the before mentioned sounds, it was quite easy and quick to go through the 15 choices correctly. I don't consider myself to have great hearing, actually my right ear is not so good.
I'm bummed because all my music is in V0. I wish I had ripped it to FLAC instead, especially I've given away almost all of the original CDs. I'm not a fan of downloading music illegally but in my case am honestly considering torrenting some FLACs for which I have purchased the physical CDs already.
Still, it sort of surprises me that people with more expensive set ups can't tell the difference. I do think on casual listening there is no difference, and the difference in quality doesn't impact enjoyment whatsoever. But on careful listening, there are telltale parts of the two songs I listened to that were, in my case, 100% accurate in discerning between FLAC and mp3.
I've read about the experiment where people actually preferred lossy on a blind test. I could see how that could be the case. The lossy format sounds warmer and smoother. FLAC has that slight shimmer on the cymbals and "tsshh" and "shh" sounds that could sound overly "digital" to people with revealing systems. Maybe this is why people with expensive systems actually preferred lossy in that experiment. In my cheap system, the highs aren't that great to begin with, so the extra shimmer adds rather than detracts from the music. What I find surprising is that people can't tell the difference. I think if you listen carefully the difference is obvious. Which one is preferable is a different story.