Their support is fast. They answer all of their tickets in a fast and efficient manner. If I submit a ticket I usually get a response same day. All of the answers provided are very good. They advised me which OS to pick and told me if there would be any conflicts.
Their website is very easy to find things, an order is easy, invoice is sent via email. All tickets can be responded to via email as well.
My server was told to take up to 72 hours, but this is acceptable since this is shown on their server page to take 24-96 hours to setup the server. They even installed a firewall, security, tmp and noexec drives, all for free.
I highly recommend ISNnetworks. Their prices are great, and so is their service. They have specials and overstocked servers that are even cheaper than the server I bought.