Myetherwallet is an open-source project and it has trusted by many Ethereum users, so I don't think any light wallet better than Myetherwallet to store ETH or ERC-token. As far as I know, the Eidoo wallet is just a product created by an ICO - Eidoo. Imho, I don't recommend to use it to store your private asset unless you must use it to store EIDOO token.