Looking for reputed dedicated hosts with IPv6 and custom firewall support for advanced streaming setups.
Requirements: 1TB NVMe, 64GB RAM, 10Gbps uplink, ≥50TB bandwidth. Can I rely on GTHost.com dedicated servers? Other options?

Dedicated servers from hostingsource.com (50% off first month on dedi coupon code: 50%Discount) can be quite right for meeting all your needs.
Customer service is very responsive, helps in any troubleshooting. No downtime.

Check out MyResellerHome's web hosting service.  The cost of a dedicated hosting plan is as low as $99 per month. Our web hosting plans include a variety of services, such as cPanel/Plesk, free SSL, WHMCS, complete root access, and a 100% uptime guarantee. Additionally, we provide 24/7 customer support. For additional information, please consult our website.

The uptime has been impeccable, ensuring my business remains operational 24/7.
Their 24/7 technical support is always ready to assist with any queries.
Go ahead, GTHost.com instant dedicated servers are trustworthy.

Have a look at servers from time-tested companies - 4goodhosting.com and planethoster.com.
Count me a satisfied customer. They are cost-competitive and service oriented.