Sounds familiar, the ZS10 Pro was my first IEM, and I also had an Aria that broke last fall.
I liked the ZS10 Pro, was happy about the bass, but it was just a bit too bright for me. Aria became my daily, but the bass was a bit thin at times, and I couldn’t quite figure it out. That was what got me to come here.
Folks are showing you some great options, with your budget, that Tripowin Olina and Shuoer S12 would be a great combo.
For the Olina, if you like bass, you will want to try the double mesh mod on the Olina, since it hits me as a bit too bright stock. The stage, imaging and resolution are amazing, and if you liked Aria, this will seem like an upgrade in every way.
I am also a big fan of the Tin Hifi T3+, which graphs a lot like the Tanchjim Hana 2021. Prior to the Olina this was my favorite under $100 ( usually $70 on Linsoul ), but I have fit issues with it, which limits me to half day sessions.
Mele is my daily goto daily IEM, and perfect for when I don’t know what I want. It is comfortable, and has zero sibilance, but also lacks the sparkle that some people like. This is my favorite under $50, but is too dark for some.
If anyone mentions the Timeless, the S12 is just a little brighter, way better made, has QA ( not sure if 7Hz does that at all ), and $70 cheaper. I love the Timeless, but is seems like they only did a bit better than Moondrop with the Aria.
Also the S12 takes EQ very well ( planar sets usually do ), when I want some slam, I throw a bass shelf of 6db around 166Hz, and it can do justice to any genre that wants some bass. The S12 is one of the most flexible IEMs on the market and can do nearly anything well. I wish the cable came in 2.5mm termination, seriously that is my biggest complaint.
Sets that I haven’t tried, that were mentioned.
- I hear good things about Kato from multiple sources, and that model hasn’t publicly had the QA issues of the cable connectors on the Aria, or the paint chipping issue of Starfield. Their interpretation of their one year warranty, leaves a lot to be desired. My Aria never left my apartment, and I am reluctant to give Moondrop more of my money after that interaction.
- The lkko OH10 ( $200 ) the physical weight and the pumped up treble both seem excessive to me. This one goes on sale for $130 or so on Drop regularly.
- Tanchjim Hana 2021 ( $180 list ) - This one just topped HBBs under $300 tier list, and it is a top 3 pick for lots of people in that range. I was debating this or O2 before Olina was announced, and then Hekili came out, so many IEMs, so little time.