Even at the very beginning of my audio journey, Sennheiser headphones have been the reference of the headphone world. My taste in music & headphones have changed through the years, so dramatically that some headphones I used to love became boring and some others became irritating to the ears. Yet I always liked the HD600's sweet smooth comfortable sound, and I can never get over with the enormous soundstage representation and detail retrieval of HD800s. Here's my take of a comparison between HD600, HD700, HD800, HD800S Soundstage & Imaging: HD600 has the smallest soundstage of the 3. HD700 has a 20% soundstage boost (over HD600) with a more exciting imaging ability. HD800 has an astonishing soundstage boost (over HD700) and an alarmingly accurate imaging ability. Wow is the only word for them on first listen. HD800S takes a little bit of it's imaging ability and trades for some soundstage and overall balance. HD800 is a tad more precise. HD800S i...