I have got an S3 saloon on order yes, it's due to begin build on the 3rd of October.
I drove the Golf R, the S3 and an M135i (couldn't find an M140i to test, but they are similar enough). The Golf R made a lovely noise, but I found the infotainment, perceived interior quality and even the interior styling to be a bit of a let down coming from my A4, for all intents and purposes it felt almost identical to drive to the S3, if a little more road noise (probably less sound insulation). The M135i was only really driven out of curiosity, I couldn't see myself in one (didn't want a hatch, I'd have gone for a Golf R estate had I gone that route), the power delivery was great, the interior looked ok, but felt a bit cheap on things like the harder plastics (eg stalks) and was already creaking like a good-un. There's no denying that it felt more balanced and poised, and would make for a better trackday car, but as a daily I never felt like it was as confidence inspiring to "push-on" with compared to the R and S3.
Nothing else really appealed, didn't want a Ford, didn't want a Honda, didn't see the point in trying the Leon after already thinking the Golf was a bit pokey in places.