I had them re-tip my Hana SH. The diamond just disintegrated after about 300 hrs. I had them do the Ruby Cantilever / Nude Contact Line Diamond. Great work received it back in 2 weeks. Blows away the original SH. Much better highs, deeper more defined bass. I just love the sound.
I went with the middle of the line just to try their work, very satisfied. Kind if wished I went with the next level.