I've had them and they're ok but there's even better choices for a lot less money. The good news is they hold their value and you can do well on eBay if they're in good shape. The Seeaudio Yume II has a deep and wide soundstage for classical, but slightly recessed mids that need a 2db bump at 600hz in any music player. Well rounded ones even less expensive are the Moondrop Chu 2 (which I use as daily drivers along with my Hifiman Deva Pro wired) and the 7hz Salnotes Zero:2 is excellent as well. Don't equate expensive with better sound, when you hit $80 with IEMs the return on investment goes from brutal to non existent. Harman curve is best for all of those genres since they vary so much.
The most memorable for an all around IEM for music is the Sennheiser IE600. It's a miracle they made them so small and comfy, sounding as great as they do. Imaging is the standout, by design soundstage is realistic and not large. If you buy used beware of counterfeits (there's ways to tell, can explain if you are going to shop used for a pair).
