I think they are a very good VPS hosting provider. I use their "Essential VPS" package for $49/mon for a few years for hosting a corporate web site (based on Drupal and a MySQL database). The site responds quickly. I don't think they ever had any significant downtimes or network problems (so I cannot tell if their support is performing well too...).
I also like the fact that they say explicitly that they charge $1/mon for any additional IP address (not like many other sites that you need to negotiate purchasing IPs with them).