This is beautiful to read because its not a formal summary for each coin, its a laymen's explanation and a little color commentary. My favorites so far:

>DigiByte Problem: Bitcoin’s development is too slow? I can’t really find much of a direction for DigiByte.

>DigixDAO Problem: Purchasing custodial gold requires too much trust and would be more efficient on a blockchain.

>Nexus Problem: Why aren’t digital currencies in space yet?