I would also chose ethereum. If I could chose where to hold the ethereum for 1-3 years I would store it in a Poloniex exchange account. This is because Poloniex lets users loan out cryptocurrencies such as ethereum and collect interest on the loan. Therefore, I would be making a little extra ether while holding ethereum no matter which way the price of ethereum goes.
Ethereum is relatively near historic lows right now so it is as good of a time as any to invest in ethereum. Recent projects such as Ethereum Name Service now supporting special .xyz top level domains demonstrates ethereum is increasing its utility which opens up the possibility for more demand of the cryptocurrency.Photo Source: influencive.com