The Custom Art ME are probably closer to the Legend X in signature. The Legend X is technically more proficient than the ME, and the Atlas truly succeeds at what is designed and tuned to do. The Atlas is hellaciously addictive and engaging. It receives a lot of ear time these days, although I should be listening critically to other IEMs that I need to review first. Quick impressions dont tell the story of this IEM, and really don't do it justice.