I have never used spectra but knowing that it uses Electrum network has already won my heart. This is because one of the best wallet I have ever used for BTC transactions is Electrum. This is because Electrum is one of the safest ways to store your Bitcoin. Electrum uses highly secure encryption methods to secure the private keys of its users' wallets. The seed used to generate private keys to Electrum wallets is highly secure, as well. It is an easy, secure, and lightweight wallet to store Bitcoin safely. Electrum uses blockchain indices, implying that users need not download large and ever-expanding blockchain files on their computers. I will sure have spectra to experience the ever unfailing trust I developed with such Wallet.