The first and only Glock I shot was a 10mm Glock 20 in the States a few years ago. I have to say it was the worst pistol I have ever shot. it made the most worn out ex GI 1911 feel like a Gold Cup.
Whilst this, having shot one is the absolute mutts nuts.
https://www.youtube.com/watch?v=ns75CIm8FYs