in my own opinion, the best coin ripple is because in this year I invested in Ripple for the long term because now all the coins in the market experience a considerable decrease so it takes a long time to return to normal market prices.
I wonder why you still like XRP, that coin is centralized that means there is someone who controls the price in the market.
Well, for me the best altcoin is Ethereum ever it has a good technology that most use in ICO's project to purchase tokens.
Still holding now at this coin in my portfolio.