I signed up for the FluxUltra plan on 24 March 04. Setup was very fast and professional. There were a few hiccups while my site was propogating, which was not the fault of FS. Customer service (David Turner) has been fast and friendly.
I've seen no server downtime and have a consistantly fast connection.
The two two additional MySQL databases I ordered were set up almost instantaneously.
So far, I am a very happy customer.
Great prices, support and reliability.
***I am not affiliated with fluxservices.com in any way shape or form other than being a customer.***