I want to invest in good quantity. but it is very hard to rely on hardwallets. MyEthWallet seem good in terms of ease of availability. I need to know if it is enough safe to use MEW?
It is actually safe if you never use it with private key. I mean, you should take very caution when you transfer your ETH or tokens with your p.key.
To prevent you using private key every time you want to send ETH or tokens, you can put your MEW into metamask using private key just one time.