Pretty much everything. I was a big fan of Clientexec, but it wasn`t long before whmcs won me over.
The helpdesk/knowledgebase is the biggest plus for me. While CE does offer a support desk of sorts, it is rather basic by comparison.
I`ve also been watching the resource usage when this script was in operation, it seems considerably lighter to use than CE. There`s a lot less javascript etc.
I sounds like a salesman. Sorry, that`s not my intent
