I auditioned the Omega speaker cables plus the Sigma v2 end of October against my AQ Thunderbird. While the Sigma vs. Thunderbird could be argued as a matter of taste. The AQ having that clear, energetic AQ house-sound, while the Sigma has all the Shunyata attributes of detailed, yet-unfatiguing and „organic“. But comparing the Omega vs Sigma, the Sigma in my opinion sounds somewhat blurry, warmish and the Omega just more realistic, detailed with quite a lot bigger soundstage. Bottom line: Thunderbird and Sigma v2 are both excellent cables. The Omega however is truly superb. If you can afford it, I think it‘s well worth the extra cost. So, enjoy your new beauties!! … and please report what you think.