John Maynard Keynes has caused more destruction. The entire inflation based monetary system was his fault. Most things wrong with modern economics could be traced to Keynes. Milton Friedman was only an Austrian sellout; A cheap version of Ludwig von Misess
Go for Dash which PIVX ripped off from. Dash uses trustless mixing instead of the trusted Zerocoin setup. I've written a bit about them here.
When you say "inflation based monetary system", do you mean inflation targeting frameworks (where a central bank would target 2-3% inflation, for example)?
Mises typically said the polar opposite to whatever Marx said, which means that whenever Marx gave a half-trugh, Mises gave an opposite half truth. For example, Marx conflated land with capital to attack capital and Austrians conflated land with capital to defend capital. Neither side should have conflated them.