WM1AM2, though if you’re fine with using Bluetooth streaming (LDAC) on the WM1A I’d recommend getting that and installing walkman one on it instead.
I’d really rather not encourage the android based DAPs, it is good for a phone or tablet, but it makes the DAP part a bigger pain in the ass since they typically do NOT get updates to the base operating system, namely due to the fact that they have to design the audio component from the ground up. Linux based DAPs are a lot better in my experience.
I’ll say that it is easier for me because I download most of my music, but I don’t have any problem streaming from my devices to my WM1A. Keep in mind you’re likely to be within earshot of these devices anyways because a DAP isn’t going to have a sim card, so it either needs WiFi or proximity to a device that does, but the benefit with LDAC is that you have your library accessible from those devices as well.