I don't own OneKey hardware wallet so I can't answer everything you want, but I know they are forked from Trezor wallet with added secure element ATECC608A.
They are making regular updates for their native OneKey app, but not all of their devices have battery, only OneKey Classic 100 mAh and OneKey Touch 800 mAh.
I am not going to recommend any hardware wallet, you have the list with more information, and you can make your own decision based on your needs and coins your use.
oh sorry I was convinced you had a OneKey, thanks anyway for answering some of my questions. I'll take a closer look at your list, I've been getting paranoid about closed source hw lately and was hoping to get some advice on the buying an open source one
If you are paranoid, honestly get yourself a
Passport batch 2. It is on the expensive side, but it's worth its price, since the hardware (and of course, software) is all open source and verifiable, so it has no hidden mini chips in the camera, display or elsewhere running closed firmware. It is also just very convenient to use.
Click the hyperlink for my full review, otherwise I'll start repeating myself..