Scale has ALWAYS been right there at the point of need, no matter what method we use to contact them, online chat, remote tunnels to our machines or through the ticket system. They have never failed us in any request.
We have a production environment in the quarrying and construction business. We have expanded from around 1000 employees to over 3000 employees. In that time the number of sites and demand on our infrastructure has also increased. We choose Scale as it allowed us to easily add more nodes, more powerful newer nodes as the business grew. This has been seamless with Scale being on site with us and remotely. I don't think we would have had other solutions out there that would have been as easy to stay ahead of our growing business so easily.
Citrix was our oldest virtual environment and it was tired when we retired it fully. But when testing newer systems it would have taken more time and was not as easily adaptable to grow our system. Hyper-V may be the basic MS virtual environment but the configuration of LUNs and Sans to provide storage would have escalated our time enormously.
Where you require a quick creation of a virtual machine either live for scaling production or demand. Keeping clones ready to go make it very quick. It can get expensive with more nodes, but the more nodes the better the DR.