What tool do you prefer to use for project scheduling?

MS Project... For smaller projects - Excel..

P6 or MS Projects 

Project Management Software (i.e MS Project & Primavera)

Can also used Microsoft Excel for preparing Bar Chart w/ S - Curve

One of the most common project management software tool types is scheduling tools. Scheduling tools are used to sequence project activities and assign dates and resources to them. The detail and sophistication of a schedule produced by a scheduling tool can vary considerably with the project management methodology used, the features provided and the scheduling methods supported. Scheduling tools may include support for:

1. Multiple dependency relationship types between activities

2.Resource assignment and levelling

3.Critical Path

4. Activity duration estimation and probability-based simulation

5. Activity cost accounting

Microsoft Excel

Primavera p6 

cos it has so many. Inbuilt techniques that excel or manually difficult to do