Amdocs customer experience suite / amdocs on general just about does it all! You can easily branch out with their product offering to meet the needs of your evolving business

Their product documentation is really good

The look of AMDOCS is much more modern. I have used CSG in the past and AMDOCS definitely looks better. Because AMDOCS looks more modern it is also easier to use. I have used CSG for over a year and was always confused with its interactions. AMDOCS came more naturally to me and I enjoy using it more than CSG, even though I needed to adapt to a new billing system.