You don't even have to go back that far. XAML and C# developed with Visual Studio and Expression Blend is a fantastic experience, it almost makes me wish Silverlight was still around.
WinForms in Visual Studio is fast enough, but working with WPF and XAML certainly used to be painfully, painfully slow! Visual Studio would grind to a halt and memory usage would go through the roof.
In fairness, I haven't done any Windows desktop development for some time, so the XAML designer might be less crap nowadays.