I seem to think that cloud providers are particular opaque about small glitches (i.e. they aren't going to tell you that a router or switch was rebooted for maintenance if it comes back right away and you can email support and it's always the same response: "it's working right now") :)

On the network side no, it's much more crappy on AWS.

Which provider is the best, network wise?

I only have experience with AWS and on prem and high quality colo like Equinix. Possibly due to reduced complexity and having full control over networking setup but significantly fewer issues vs AWS.