For me, it’s an electric toothbrush. It doesn’t matter if you go with Sonicare or Oral-B, once you start using an electric toothbrush, regular toothbrushes don’t ever feel like they clean your teeth properly. The smooth plaque-free top layer of your teeth that you can feel after using an electric toothbrush can’t be replicated with a regular toothbrush.
I’ve bought a Hiby R3 Pro II a while back and it’s amazing. The build quality is top notch, the battery lasts for 20+ hours and it has basically everything one could need; USB-C, Bluetooth with Apt-X and LDAC, a good screen and a balanced output with plenty of power.
Even rudimentary support for Tidal and Qobuz. The only downside is that there’s no storage built-in, but you can use microSD cards up to 2TB.