I'm using a DTAC eSIM I got through Airalo. Even though it appeared to be working only for 15 days, it's still usable for almost a year now. Just have to top-up once in a while through the app. Also sometimes using their roaming packages in Asia which I think are reasonably priced. My only concern is what will happen when I change to a new iPhone. And there we have the huge disadvantage of eSIMs. The bit exotic ones you just cannot transfer white a physical SIM you just move over to a new phone and it will work.