I like Bitcoin, Ethereum, Neo, Monero & Dash. I think the second stage of the economy switching to crypto will be people realizing that while cryptocurrency is the future and superior to fiat money in almost all ways, the anonymity provided by Bitcoin is minimal since the ledger is so transparent. There is some anonymity, but as soon as your name is tied to a Wallet address, the anonymity is gone, so while Bitcoin will probably become a store of value/reserve currency, day to day usage will likely migrate to something that protects true anonymity. The risk of the privacy coins like Monero & Dash is that if there is somewhere the government will crack down on first, it will be these privacy coins since it makes it even harder to track the movement of funds and enforce income tax laws. So while I think the movement to these types of currencies is inevitable, in the short term it may not be as profitable an investment as the governments adds regulation and struggle to keep the sand from leaking out between their fingers. It seems inevitable to me that there will eventually be no income tax (because it will be too difficult to track income), and we will instead switch to taxing consumption. (sales taxes, etc)