+1. Thanks to chi-fi it'll be getting harder and harder for many manufacturers of higher end phones to justify their prices just based on the sonic technicalities of their creations. I paid 28€ for my 10Pro and while they're not the technically most sophisticated IEM in my stash they certainly don't sound 1000€ or more away from the upper tier to my ears either and I can't wait for the next happy accidents of that sort. Like I've posted before my set needed a pretty long break-in phase (200+ hours) for the drivers to literally get their act together but after all I still prefer the ZS7 for the majority of my tracks - faster, punchier bass with less bleed, significantly better coherency (fast transients) as well as clarity and separation of instruments especially in crowded tracks. In some of my trusty test tracks the brass sections sound somewhat messy through the 10Pro whereas the 7 and my higher end IEMs render those parts with significantly better separation among the different horns. The 10Pro OTOH beat the 7 with more natural sounding mids and highs, a more fluent, more cohesive and smoother presentation with better balance but the comparatively slow and less textured bass really leaves me wanting here and there, just a personal thing - YMMV.