These two coin are great potential coin and also top cryptocurrency in the globe today. Everyone have reasons for choosing among the two which to have or either both, personally I would prefer BNB it economical in terms of all usages this mostly include for making of payment, building a project via tapping on it network, as well as sending out transaction with less expenses. It can used by everyone irrespective of fee but ETH can not be easily be used for transaction without owning enough quantity for fill out the gas fee leaving a threat amongst it's users.