The customer support team is very knowledgeable about their product line as well all other products they provide for us in our network management department at this time! I have not found anything that we dislike specifically with how cyrusone has helped out so far but if there was one thing i could think off hand would be more control over routing protocols used within my environment (BGP).
We are solving problems related networking by implementing new equipment into networks where previously these issues were never addressed before now through use cases such infrastructure design/deployment projects etc..