I went STG3 some time ago and could not be happier. I also toyed around with selling my car but in the end decided to keep it and have not regretted it since. It all boils down to what stage in life you are at and what your "needs" are. To me it was basically a choice between having a fun car which had practical use as well.
When I finally pulled the trigger on STG3 it felt like a brand new car when I got it back. My passion for it is renewed and I wash my car more now then ever. Finding a replacement won't be easy....