jeffriI have both, i prefer the Erasers.
Erasers are really interesting for concerts, nightclub etc.. They really keep the music quality, sound is not muffled and they are nearly invisible when you use them.
The protection is good, linear and they are really comfortable to wear .
Flare Audio are good for concert with heavy sound, when you're really close to the speakers , or when sound is saturated. Isolation is really interesting when you use your motorbike for example, because you can still hear everything, but in a "cleaner way".