It's great to see more full-AMD hardware from TUXEDO. I'm currently using their Aura 15 Gen2, and my only complaint is about the fingerprint sensor - which isn't even really a TUXEDO issue as they have written and submitted a patch upstream for libfprint which makes it work. (And since I'm using Gentoo I've just dropped that patch into my local portage tree until upstream merges it)
They're definitely not the cheapest computer vendor, but their quality is good and their support is great. No odd boot behaviors, ACPI errors, random device disappearances, etc, like I've had with other non-Linux-first vendors.