There are four predefined Forecast views, two of which are in Gantt format; and two in chart. The first, helps plan your projects or audit their planning. The second is very useful for statistics.
Reports. I love the way Odoo's PM tool shows profitability per project at a glance. As well as the customizability of reports and creation of Dashboards.
Responsiveness. It loads tons of info nearly instantly.
Expenses and payroll management within tasks, as long as you have both modules and all dependencies installed and correctly configured.
The lack of an internal option (without using Studio or BoMs from the Inventory Module) to assign material resources to a project in order to TEMPORARILY set them aside as to avoid overdrawing the supplies needed for a specific type of project.
1) Start as many databases in trial period as you need to get the hang of it.
2) Convince yourself this is the tool you need before you commit to a period or make any payments.
3) Make sure your sales rep is email@example.com She's really helpful and will stick with you until the end. I have never met anyone as devoted to her customers.
Thanks to Odoo PM we are now able to control 4 branches, whereas before, we weren't able to keep track of events for the HQ alone.