By reading your post history I see you're getting ready for mining and that you have $100k to invest, but at the same time you ask for some free to use wallet? Invest $50 in a hardware wallet and sleep peacefully, and this is the best advice you can get for free. However, if you want to take the risk you can play with Electrum and similar wallets, but keep in mind that free solutions are often the most expensive at the end. One mistake and your coins are in hacker wallet.