We chose this system in the way we need to get statistics on orders, services, customers. Understand what customers order. Seasonality of orders. Monitor the availability of supplies. Possibility to manage the warehouse and the equipment / inventory that goes to the orders. Notification and provision of information for freelancers (executors) on orders.
I pobrboval several CRM systems, but they were either sufficiently truncated on the functionality or required a volume paid completion. I used the Belarusian CRM Orderino, at that time it was most suited to the list of my tasks. But since the developer did not contact the discussion for the finalization, they had to abandon them.
OneBox has the widest functionality and great flexibility in the finalization. I think so, but we'll see)