Electrum wallet is good.and the fee is not bad,but i don't feel comfortable to keep my bitcoin in cold storage,i will only use the wallet for a while and then move them to exchanger.
After bitcoincash split, there were too much rumors about electrum. Then I totally quited from it. I'm using bitcoin core on my desktop and using blockchain.info for mobile purposes. In blockchain.info, I don't hold bitcoins, just using for transactions.