What is the difference between an Electrum Wallet and the old desktop wallet? - Electrum Wallet doesn't require you to download the entire blockchain of TOA so no need to wait for your wallet to catch up with the latest blocks which is a problem for new installs. - You can also back up your wallet using a seed file which you can use for restoring or loading your wallet on another computer.
Take note though that since it doesn't download the entire blockchain, it DOES NOT STAKE.