BTC - the king of crypto and perhaps most assured to retain value, will still encounter bubbles/corrections/whatever you choose to call them. In the end, it is likely more stable than the U.S. Dollar and while I'd recommend most put an equal or greater % (depending on their age, ability to tolerate risk/loss/hodl) into something more stable (PHYSICAL silver and gold NOT paper of the same). ETH will present a very significant challenge and may surpass BTC in the future, but for the next 1-2yrs miSee full review

ETH is my bet for the strongest crypto future. I've been coding since 1973, co-founded the world's first privately held global social network. (Pre- AOL, MSN, eBay, Amazon and MSN .coms) and while not 100% perfect track record on predictions, right far more often than wrong. I truly don't want to make this about me, but as the first commercial ISP in multiple states, named by Google as having shown the path and inspiration for YouTube Live/Hangouts On-Air and even earlier pioneering ways to makeSee full review