I'd wait if I didn't have it. It sounds really good, no doubt Sony has given it really solid sound, and with the latest app updates I have no real usabilitity issues, but it's battery life (one session, no all day use, and that's with everything turned off / tweaked and auto shut off, etc) isn't good enough in 2022 IMO. I am sure whatever they come out with next will improve that.
It's better in offline only mode, no bluetooth or wifi on, but yeah.
It's also still running Android 9 which is super outdated at this point and probably full of security issues to boot for accounts you use on it.
That is with provisio that Sony is actually still persuing the niche, small form factor DAP market. I mean they stopped updating their Portable Headphone Amplifier series (maybe due to the rise of DAP market, not sure) a while ago and they have their extremely expensive DAP series that's in the multiple thousands of dollars for people without price constraints, so I am not sure if they will continue in this niche market.
It may also be that devices this small aren't big enough for modern battery technology to work well with android and streaming power and audio circuitry requirements.
Even so, it's a hard device to recommend due to it's short comings, although I do find it pleasant to use whenever I'm using IEMs.
Also, It's hard to use DAPs with streaming services with extremely tiny screens when you can use an external dac device with so many phones these days that have incredible and better sized screens.
It's sort of stuck between 2 use cases - a full sized DAP that has the convenience of a phone screen size for apps and audio power circuitry that's good, and a dedicated portable dac. it makes compromises to sit in the middle.
