This guide is written for Tails 4.21. At the time of writing this is the latest version of Tails. If you are using an older version of Tails you should seriously consider upgrading.
Electrum-like Monero wallet. Download and run, no complicated setup required.
The GUI wallet has a nice graphical interface that doesn't require much explanation. It requires more system resources to run, and may be hard to use on older machines. The inital set up is a bit more involved than Feather or the CLI wallet.
The CLI is the ultimate Monero power-user tool. Requires some knowledge of the command line to operate.