Are those easy to use/safe? Probably very safe lol. But are they also easy to use?
Bitbox kinda sparked my interest tbh. Although seedsigner did too…
Discussion
For ease of use you should probably invest in a service like casa, unchained capital, etc. I don't know about bitbox but the seedsigner UI is 💯.
You need to learn what each option means and how it works in concept. There is no substitute for education. You cannot safely custody your own bitcoin without first understanding it.
Cold card is rough on the UX, not gonna lie. :)