I have been working with them for over 10 years now - they are always there when you need it! They provide great support/updates at no additional cost or time commitment from my end as well.
Nothing really that stands out about this service other than their customer care team has never let me down once throughout all those many months together since we started our relationship back then!! The only thing i dislike sometimes would be if some times updates take longer hours like 2-3 hrs but not too long so its ok :). We use velocity network primarily because everything works just fine without any issues thus far ever encountered by us using these products which include office 365 email client etc..