All of my sites hosted on Jodohost use CFMX. While most of them are members-only sites used for corporate sales management systems, one site you can view is in my signature, the link to Retirement Communities. Although I am still making changes as I go to layout, static content, etc. the dynamic aspect works great, so I have been very satisfied with the performance of the servers and CFMX, as have my clients.
I am currently running all CFMX apps with Access databases, but am soon to convert one to MSSQL due to an expected data volume increase.