I like Byteball project and of course I like the concept of Blackbytes too. Reading now and them their thread, from what I know blackbytes are quite hard to keep.
From what I know, if you are not careful enough when you move your wallet from a computer to another you may lose them.
Unfortunately I didn't dig too deep into the details; I was not very careful and I may have lost some...
I am a fan of paper wallets and means to recover your money from something you can write or print onto paper. And this makes Monero higher on my list than blackbytes.

Maybe you have more details on this, maybe you can share in easy words your way to handle blackbytes to not lose them.
How did you buy blackbytes? Mine came at the airdrops. Did you buy on Slack? Did you use in-wallet buy? Can you share the experience?
I wanted to sell blackbytes when I was very low on money, but they seemed so underpriced I may actually start buying more (if I get an easy way to make sure I don't lose them)