SwiftKey is one of the few things I truly enjoy on Android UX-wise. Also switched recently from Windows Phone. Multilingual support is super nice. I use it for three languages, and I'm able to use same layout for English und German and get prediction for both of them, it works flawlessly. Minimal dark yellow theme is very clean and modern looking. Key pop ups work flawlessly and fast for me. Literally don't get this guy's complains.