How do I choose between standard tracing, Logger.NET, Enterprise Library, log4net or Ukadc.Diagnostics?

Is there a situation where one is more appropriate than the other? ... what would that be? (ASP.NET, console app, Azure Cloud, SOHO, Enterprise...)

What are the benefits or drawbacks?

Did I miss any other major logging frameworks?

.net log4net enterprise-library nlog system.diagnostics
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