My point of view as a WPF developer is that I permanently switched the xaml files to be opened with the plain xml editor rather than with the normal design view

My point of view as a WPF developer is that I permanently switched the xaml files to be opened with the plain xml editor rather than with the normal design view. If I need to design something really specific, in the very unlikely case that I don't do it with Inkscape, I use expression blend just to iterate quickly over that very specific graphical element. For all the rest I just write xaml. There is auto-completion, most of the time I don't even need it, and if I had to use the designer view to compose my guis I would spend much more time for nothing. And after that I had to manually edit the awful design that is spit out by The wysiwyg editor. So I really can't imagine myself now using one gui editor as I have done multiple times in the past.