How to download a webpage - most appropriate way of fetching a page with C# WPF (WebRequest or WebClient or HttpWebRequest or HtmlAgilityPack )

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C#

WPF

C#5.0

TPL

Alright there are so many questions and answers on this

But at the latest tech (.net 4.5 visual studio 2013 v3) , C# WPF application

What is the best (the one that has most performance, the one that you have most control over everything, the one that works perfect as a TASK from TPL)

The options are

WebRequest
WebClient 
HttpWebRequest 
HtmlAgilityPack.HtmlWeb // hwWeb.Load 

Which one do you suggest most ?

Why ?

And what is the most effective way of using ?

Thank you very much for answers