OK received my M200 today and will address the tip thing first. These definitely have an unusual tip and it's tapered cone shape will be problematic for some users. Fortunately the large is working for me. This design will also throw anyone used to a deep insertion or a plugged feeling for a loop because it's simply not designed that way. The design has a soft middle part that you want to settle right at the opening of your concha right after you get the stiffer initial part of the tip past the opening. This then creates a comfortable seal. Also anyone using the really small Sony tips will need to look elsewhere.
Now on to the good part, the SOUND!!! Sonically these are right between the Ex1000 and the MDR7550 with no where near the wind issues (the size and design does have some wind issues though) and slightly better isolation. The bass is deep and controlled with more bass than the M500, slightly warmer mids, and a bit gentler treble. They are in the same family sonically but the M500 is brighter and more analytical while the M200 is warmer and a bit more forgiving.
The M200 is not as device finicky working well on my Nokia 920 from a sonic perspective as well as my iPad mini (the mic does not work though just like the M500 iPhone cable).
My UE900 sounds slightly better technically to my ears from a detail retrieval perspective but I have a feeling the fuller sound of the M200 may make it a more enjoyable listen for me and a lot of listeners. I will wait for a couple of days to see if I start to have anything I am unhappy about but right now these are the best dynamic IEM I have heard. They really have been exquisitely tuned.
One last thing, I find myself turning these up to a higher volume level. I think this is a combination of being a bit harder to drive and my being used to more detail or brighter sound so I end up listening at a louder level. But if this the case I also have to say I am not getting any fatigue doing it so it may just be the tuning of the IEM. I wonder if any of this has to do with their ear protection technology? Something I can't find much information about.