Hey rockbear,
I'm with
www.RealityCheckNetwork.com - although we're no ISPrime, NatNet, PhatServers, but we compete at the very same level.
We provide highly managed services for all of our customers.
We have a large staff that is knowledgeable and can help you any time of day. Additionally we employ an active monitoring system - this alerts our staff within 1minute of a service problem. No more having to wake up at 3AM to respond to alerts we're already on top of it.
We have a specific security team that handles intrusion and server hardening allowing us to minimize security breaches and better understand the attack vector. What we learn from one customer we pass on to the rest in terms of security and performance optimization.
Contact me on ICQ: 4930562 so I can give you some direct references.