Advantage XPath Evaluation over XSLT

I'm currently programming an application that uses WPF. Therefore i'm planning to load the GUI dynamically via XAML based upon a given XML.

As i see it i have two choices:

1) Evaluate XML by myself with xpath and create GUI elements by myself.

-or-

2) Generate XAML through a XSLT transformation and load that file.

So the question is, which way is more suitable? Or isn't the difference that big so it's just a question which way i prefer more?

Thanks in advance! :)