what about those whales ? they are the ones that manipulate bitcoin right ?  bitcoin is the one that is manipulatable the most but fiats like usd are can only be manipulated minimally  . btc is unstable but it can be used on both ways  , that is for investing and paying but usd is more stable but can only be used for paying  . so my vote will go for btc because its a multifunctional  coin plus its also decentralized   . we have a freedom when we use btc than on usd or fiat