Maybe it's just me but I could have sworn that the question has been asked and answered before. Multiple times.
The only difference is that now we also have CE, allthough it doesn't really have lots of FLAC, but those that are there are good imo and it's ratio free.
Personally I don't believe that questions like these have true meaning. Most important is what genres of music somebody listens to. According to his preferences he can find a tracker to suite his taste. Of course trackers dedicated to flac have higher quality standards than the others but this doesn't mean that someone can find in them the albums he's searching for.