Comparing networks and performance I believe zayo will outperform Cogent in most places but I’ve heard nightmares about dealing with Zayo’s account managers and billing reps.
Cogent is great at their price point and you will get a very sweet deal for a 10G circuit and their account managers and NOC both have been great for us.
We are in a facility where my only options are Cogent or Zayo. We plan on getting a 10G connection for a web crawler using v4 only. Looking for feedback on either or (keeping the politics out of it).