I owned the originally released non-streamlined version and it was one of the nicest plastic engines I ever owned. The detailing was excellent. It ran well, and the paint was very good (this is coming from someone who refuses to buy Athearn diesels due to their poor quality control history in recent years).
I had the non-sound version, so cannot comment on sound.
John
Your thoughts on this engine? How does it run, detail, sound, paint, etc?