The best Tasker for you depends on what you need help with and what's most important for your task.
For example, if you need a Tasker with high reviews within a certain price range, then you'll want to look at Taskers that fit within those requirements.
The task isn't scheduled until both you and the Tasker confirm the task details within the task's chat thread. You're also able to view Tasker profiles, read reviews, and read up on their skills before you send a task request, so it can help to do so before you make your decision!