HUSH has acquired the Zcash developer who developed the windows and I think Mac GUI
s for Zcash. I sold half my Zcash to get it. He's attracting new talent to the project. Development is moving fast and it may soon get listed on Bittrex instead of just Cryptopia and Satoshi. Currently at 0.7% the price of Zcash (~ $1) with I think a potential to go to 10% the price of Zcash. So if Zcash goes back to 1/6 the price of BTC and HUSH goes to 1/10 the price of Zcash, then 33x more BTC per BTC invested is the potential of HUSH.
RE: IRS has been tracking Bitcoin usage since 2015 & List of Coins that Can Save You from Spies.