If you dont mind spending for an upgrade in build quality and for the detachable design, then sure go for it. Do mind that it won't be much of an upgrade sonically. I find that the lan (even with my preferred ms42 tips that tend to smoothen the highs) still suffers from being shouty and harsh sometimes, and require me to adjust the volume for some tracks. If the one thing you hate about the chu is the fact that the cable is fixed, then the lan will satisfy you. That was my reason for getting the lan.

They're just generic stock moondrop tips.

I've edited my original comment. Average soundstage, good imaging.

First impressions: Definitely sounds like a more balanced chu; some other people are claiming that they are successors to ssr/ssp", maybe they are taking over that price bracket but doesn't seem to sound a lot like my SSPs, at least from what I remember when I had them briefly. It has slightly less edge, and just a tad more bass than the chu, can still sound shouty/harsh on some tracks. Technicalities and resolution are good, good detail retrieval. Soundstage is decent but excels at imaging and intrument separation. The sound is a lot more similar to the 7hz zero, albeit less transparent and not as warm but is much better built.

The rubbery cable feels very similar to the orginal chu, but it's detachable. I prefer a thicker cable, so it got swapped out. Also did not try with stock tips. I use MS42 tips for almost all my IEMs, so at least my comparison with the chu is fair. The build is really good, there's some heft to the shell.

Zune on Windows were my go to media player. The design were ahead of its time; while itunes today is very much outdated, zune still look fresh today.

There are several reasons why getting a replacement case won't necessarily solve the issue. One of the possible reasons are the cases and the earbuds has been factory set to exclusively communicate with each other and not other units. I don't know if this is the same for Moondrop, but this is how it works for Sony's TWS. Sony though will still provide helpful support and solutions. If you ever lost the case, you'd have to mail your earbuds back to sony or physically go to their service center so they can pair a new case with your earbuds.