From various sources, MyEtherWallet (MEW) are not under development and maintenance any more. Even its founders has confirmed that they are switching to develop a new platform called mycrypto and encourage everybody to move there property to there.
But IMO, MEW or mycrypto is just a gateway to access your real wallet in the blockchain, so, both of them are still fine event MEW is not maintained anymore, right?
Yes if you have the control of private key of your account you can access them from anywhere. I have used mew , mycrypto both are ok. But even if Mew is not there , there are hundreds of others erc 20 compitaible wallets . I currently use trust monile application as wallet , it is quiet good to me.