Bluetooth earphones : TWS or Neckband

I’d rather lose my headphones then have one earbud staring at me every day, silently accusing me of losing its mate.

Why the hell would you want both?

For everyone else who has to look up what a those terms mean

Also, you can use neckbands until they're fully drained of battery and instantly wear the earpieces whenever needed. Wireless earbuds require you to wait until the buds have drawn enough power from the case after each listening session.
I'm sorry but neckbands need to be charged as well, no?
- Many of them can charge while in use.

TWS because I preferred bluetooth to not deal with cables.

Neither.

Bone conduction headset. Shokz OpenRun or OpenComm. Nothing in the ears, nothing on the neck.

I have the OpenRun Pro (mostly for work) and love it. Being able to listen to music or whatever without blocking yourself from the outside world, and without having something in your ears (I generally don't care for earbuds) is fantastic. It's my "daily driver" but there are a couple downsides:
Sound quality is totally listenable, but not audiophile level. Think a pair of Sound blaster computer speakers from 1995. They get the job done for casual use, and for many people that's all you need
Some people aren't a fan of the "tickling" when listening at high volumes, especially where there's bass. My dad helped me out with some stuff and I tried to gift him a pair, but he stuck with his wired behind-the-head earbuds because he just didn't care for the sensation when he tried mine. I don't have a problem with it, but my hearing may be a little better so I can get by with lower volumes
If you're in a noisy environment and want to block out the noise, this is a terrible option. I tried using it on an airplane and could hardly hear anything
If none of those bother you, Shokz is a fantastic option for sure.
- If you're in a noisy environment and want to block out the noise, this is a terrible option. I tried using it on an airplane and could hardly hear anything.
  I mostly agree with your other two points, but not this one. You should never try to "cover" noise with louder noise; that is just a recipe for hearing loss. Instead, you should be wearing some form of ear protection. Earbuds are not designed to function as hearing protection, nor are most headphones.
  With bone conduction, you can wear regular, rated earplugs to block out ambient noise without blocking your audio. I find that I can usually lower my audio volume significantly when wearing earplugs.
- What about people with glasses? Can the legs round part be adjusted without pressing against the glasses frames?
- awesome option.
I bought the OpenRun for my bicycle commute. Listening to podcasts without the danger of blocking out traffic noise is just neat.

I prefer TWS. My last neckband pair were always getting caught on my clothing and long hair.

The comfort and convenience of TWS is hard to beat. The Pixel Buds series A are amazing for the price.

It's harder for me to lose a neckband

For podcasts (not music) I like a single wireless Bluetooth headphone so that I can pay attention to the world around me. The audio fidelity isn't that important to me for just listening to people talk.

TWS - but only if they’re the kind with those curved plastic pieces that hook around your ear. I don’t trust earbuds not to fall out and get lost or stepped on.

I've had my Samsung buds Pro for nearly e years, and the only time I've had that issue is when when I hang my head fully upside down. But they've never fallen out, just slipped a tiny bit.
- Yeah. I know it’s highly unlikely, but it concerns me anyway. The “hooks” are more for my peace of mind than anything else.

I prefer over ear headphones as they tend to sound better, don't fall off my ears every few minutes, and have better battery life. But that's just my personal preference.

Depends on what I am listening to and doing. I usually like magnetic neckband headphones if I am moving around and maybe listening to a book, but prefer iems or openbacks if I am listening to music.

I've had both. I found the neckband more convenient. Just wear the on your neck when not in use. But the cable gave up after 1,5 years. TWS, I lost three earbuds..

Neither. Wired all the way.

thanks for playing

I still use wired headphones because I have a pair I like and they still work fine. If I were to pick up a Bluetooth pair, I'd go for headphones or the neckband style over the AirPod-style.

Bluetooth earphones will never achieve sound quality of a cabled earphone. So I use a cabled iem.

Never is a bold claim.
- Like aptX lossless with a good DAC and you are pretty much there.
You just need to achieve a sound quality which is pretty much undistinguishable. And current tech is already there. Blame the manufacturers for not using it.
Good for you, but that doesn't answer OPs question.
Same here. And I never have to worry about charging them.