What can I say, I love them both. Both are excellent can; however, the built quality on the A100Ti is so much better and you don't need to upgrade the cable (I hate the idea of upgrade cable). The 100ti is very balance cans. Give it a try and let me know, I think you will like it. According to Hirsch and Dusty Chalk, they prefer the 100ti to their w100. The earpads are made of very comfy leather. Anyway, the senn hd-580 and ath-A100ti are very different sounding headphone. You won't get bore on the A100ti, I promise. Let me know your impression. By the way, I just sent my Supermini to get upgrade today!!! Hopefully, it will sound much better than it used to.