I would like to know everyones opinion on the best billing system and/or server management software for dedicated servers on the market at the moment.

Right now my plans are to use Modernbill V4 since we are already using this for our hosting and reseller customers. The thing with Modernbill is it is not setup very well for use with dedicated server orders and management. I am not sure if V5 is any better, but with the horror stories I have heard about V5, I do not even want to touch it.

I know I can setup Modernbill to cover the basics of the order and such, but it just does not have the advanced features needed for a dedicated billing/management solution.

Any ideas on this?