I definitely prefer creating ads directly in Facebook Ad Manager. This should be expected as I run ads for multiple clients, across a business niches.
It’s easier to manage and create advanced strategies inside of Ad Manager or Power Editor.
The data that is available is much deeper inside of the Ad Manager.
Alternately, boosting a post can be effective for someone who isn’t as familiar as I am with the interface.
It’s also a great way to get started if you use small budgets and look at each small boost as a test.