Main difference between web user control & custom control in asp.net

This is from Microsoft's site:

Web user controls

• Easier to create
• Limited support for consumers who use a visual design tool
• A separate copy of the control is required in each application
• Cannot be added to the Toolbox in Visual Studio
• Good for static layout

Web custom controls

• Harder to create
• Full visual design tool support for consumers
• Only a single copy of the control is required, in the global assembly cache
• Can be added to the Toolbox in Visual Studio
• Good for dynamic layout