If you have enough assets to invest, then don't compromise on security. Just buy a good hardware wallet. That should keep you and your assets safe. But if you are unable to spend that money on hardware wallets, I think electrum would be a good option. I use it myself and haven't faced any problem till now. But can't say for sure if anything will happen in the future. DYOR on this and as I said before, the best option is hardware wallets.