I can just recommend you coinbase for storing ethereum nothing less i dont keep my altcoins in a specific wallet i just put them all in a trading site site poloniex great they have a lot of wallet address for a specific coin good thing you can trade them you like.
Yeah, I agree with you. Just put it in the coinbase or in xapo wallets. Me too some of my altcoins were put in the trading site because I just want to know the value of each them and their current value.
I agree that coinbase is ssafe, easy and reliable the only thing is you dont own the private keys for your own coins for eth I would try metamask its real simple to set up and use its just a chrome extension and theres what I dont like it relys on chrome! I can remember everyone using internet explorer (not long ago) so something might replace chrome! but thats just me
and I know btc wasnt one of your coins but bitkey is well worth a look you make a bootable usb with it then you have an os (dont have to rely on any browser) a wallet and a few other bits and bobs, so for btc use bitkey...... should be there slogan lol
No online wallet is 100% safe, even Coinbase isn't and you're doing everybody a disservice by spreading information like this.
Coinbase is known for blocking people's accounts, just look it up on Google and you'll find many reports about it.
Electrum has a few wallets for some of the altcoins OP mentioned, I can recommend that. I also have my electrum Litecoin wallet on a usb.