If I remember Electrum was the best lightweight and secure wallet, while Multibit was the best wallet that you would be able to quickly send and receive Bitcoin with.
If I remember correctly, didn't the Electrum devs stop working on their wallet a while ago?
Nope, it is still being updated, the newest version which was just released is 6.0.2 if I am not mistaken and Electrum is according to me the best wallet for desktop whether it be security wise, ease of use or storage.