I've been up all night comparing the 100 to the 200. These two are interesting because on the surface it seems like the sound isn't any different from the other one. Yet when you really listen there are clear differences. I don't know if I would call it a bigger soundstage, but the 100 actually puts the listener farther away from the stage. And vocals seem more forward in the 100, but this might be because the mids are more balanced. That powerful bass is there, but it blends in better with the mids with the 200, as compared with a better blend of the mids and treble with the 100.
The 200 is raw power! The kick drum and bass sound big and deep. Vocals are forward, but must bow a tiny bit to the bass and drums. And what's interesting, when I use a copper cable on my custom V6 the soundstage is massively wide. when I use my silver cable, however, the soundstage is not as wide, but those details are even more focused and pristine. Well, the same can be said about the copper wire in the 100 vs. the silver on the 200 (what you lose in soundstage you pic up in detail.
Of course, as stated before, the more balanced sound is in the 100. Which one I do I love better? Tough, because like the TDK BA200 vs. IE800, I hear qualities in both that the other one seems to miss. I have my 100s up for sale (but if it's not bought I'm cool), so I think it is safe to assume I prefer the 200, but I'm loving the more balanced sound of the 100 too. It's really tough, as I will miss the 100, but I think the 200 is my favorite. But one can't really say one is better than the other one because both have something unique from the other one. I do think the treble is a bit more forward in the 100. If I don't sell the 100, then I'll just see it as my great 200 backup plan. (typing sleepy, so forgive me)