Re: Andreas Antonopoulos says to stop using paper wallets, do you agree?
If you like metal back ups, then use them, and I accept they have some significant advantages over paper. But metal back ups are still not 100% guaranteed to be readable or even still be there when you come back to them. Two separate paper back ups is more secure than a single metal back up.
How about 2 metal backups? 
I reckon the only advantage of paper vs metal is that it's cheaper, so you can make more of them. But 2 backups should suffice for most scenarios and the biggest investment is the letter stamps which you only need to buy once. I think you can do 2 washer backups for around 5€ / $5 with a 24-pack of washers (stamp a word on each side, so 12 washers per backup for 24 word seeds), a screw and a nut.