I have been looking for a new control panel to manage my private cloud including Exchange 2010 SP1 with WHMCS. Last week I read that Microsoft is changing everything from hosting mode to on-premises and this will be the best time for me to make the switch. I used Parallels until last year (no support and average case took 3 months to get answer) and switched to WebsitePanel what does not work for my customers. In the meantime tested Ensim, MachPanel, ExtendASP and Hosting Controller. Most cp’s lack good up to date features and free support. Hosting Controller was the worse one and only policy they have is (try) to take your money and run. In the past I have tested MachPanel very extensively and really liked it but my problem was the cost and billing API for WHMCS. Migrating to your billing system will cost me a small fortune and too much time. How long before you release this API? I’m ready to make the switch. Do you offer any special deal for WHMCS users? Do you offer SPLA pricing?