Long term I would place my chips on bitcoin. I think the safety factor isn't my main reason. I think btc is an asset,
I also think the bitcoin as a new form of gold theory also carries weight. With it being pretty much un-hackable, limited in supply and way more fungible than gold. it also has the advantage of being able to be used as a currency one the price volatility subsides. Its also the worlds first ever crypto currency and true digital asset which I think is something not to be overlooked especially as the millennial generation reach their prime years!