The world doesn't need any of them.  Shitcoins are inferior to physical metals as a settlement unit, and if you want a deflationary currency, silver already exists.  For anyone in this thread that can't get it into their heads you have to be out of your mind to buy gold instead of silver:

"there was three times the amount of silver above ground in 1980 than there is today. The six billion ounces that existed in 1980 has shrunk to two billion ounces of industry standard 1000 ounces bars."

"In 1980, there were less than 3 billion ounces of gold in all forms above ground throughout the world – the cumulative production of thousands of years. Today, 38 years later, the total amount of above ground gold has doubled"

http://silverseek.com/commentary/next-silver-run-50-and-beyond-17362