hi,
the question is somewhat strange, however I try to tell you an answer. I have had the Valkyria for two years, and I sold it here on headfi, before that I also had the Twin Pulse Ragnarr Torino Limited, and now out of curiosity I got the Meze 109pro, but in the past I also had the Meze Empyrean. Then, the Spirit Torino sound is unique, because it is a very organic sound of great depth with unique resonances, they are headphones that are better with medium-high volumes, because they are without any distortion and with medium-high volumes they give their best. The Meze 109pro have something in common, from the middle down they have that nice organic presentation which is very nice, but they also offer some clarity to the top end, I use a Meze Copper PCUHD cable which seems very synergistic to me. You might think that the MEze 109pro put like this are better, in reality the driver, which is a double driver, has less distortion and a greater dynamic range, while the Meze, having reached a certain point, begins to present a compressed sound. The Meze provides the maximum expression with a tube amp with 2a3 power tubes, in these conditions the Meze is fantastic, as a second amp I use a Sparkos Labs Aries which, although excellent, fails to extract all the potential from the MEze.