Apple HomePod and Apple Music if you have bought into the Apple ecosystem. Cheap, no, quality, absolutely. Old adage, you get what you pay for.
They are about £300 and Apple Music about £8 a month. WiFi connected so it’s “hey Siri” and just tell it what track you want. No need to connect a phone or any other external advise to drive it = simple.
Sound quality is stunning.
You then have the option to add more homepods that you can pair together (stereo) or leave in different rooms as repeaters or stand alone players.
Portable, yes but you will need connection and power.