I don't rely on ASSP as much as I used to, as I rely more on push notifications and exchange for my mail, however, I've had very little issue with getting ASSP (or deluxe) to work with cPanel, and the frontend is great for your users
WHMCS Guru - WHMCS addons, management, support and more. WHMCS Notifications Extended - Add slack, hipchat, SMS, pushover to WHMCS !!
Linux Problems? WHMCS Issues? +1-866-546-8914 (linux-14) or @whmcsguru on twitter!