The GL.iNet MT-6000 Flint2. I have a site to site Wireguard VPN with my brother which I use for offsite backups. It saturates my 500Mbs internet connection when performing backups. I have seen YouTube videos of others successfully testing the 900Mbs throughput claim. I stopped using tailscale myself about a year ago so can’t comment on the performance with it. It uses a user space Wireguard implementation instead of the kernel one so that may impact performance.