I don't have too much experience with Ethereum or tokens but here's my view. I just moved from MEW to Metamask and it's so much nicer to use. I was using exodus for eth but it doesn't support enough ECR-20 tokens so I went in search of something that did. I don't want to pay the daft ledger nano price so Metamask is my choice atm and I like it.
Isn't MEW more secure though? I mean, if you create an offline paper wallet using MEW...
While offline paper wallets are secure, you will still need to some level of online interaction when you need to carry out a transaction that is where metamask comes in. Metamask provides you a platform to access your MEW wallet with the added provision of security from being phished of your private key.