Level 7
@octal In my opinion you should use version 6 TLS, you will get bug and security updates longer than the others.
Version 6 is not a completely written version from scratch, it brings with it the bugs and fixes of the old versions, so I don't think you need to be afraid of having a completely new and unknown list of bugs in version 6.
https://laravel.com/docs/6.x/releases
6 (LTS)
Release: September 3rd, 2019
Bug Fixes Until: September 3rd, 2021
Security Fixes Until: September 3rd, 2022