Ethplorer as you said checking asset in the wallet . Ethersscan i am using to check the transaction hash or tranasaction status . Yes some time we find value for coins in etherscan but ethplorer doesnt have  . But coingecko is the place we can find the actual value of or dust or depreciated coin value some of the old coins which was not showing in coinmarketcap , ethplorer , Etherscan but i could able to find it in coingecko and sold it .