The XE200PRO would be the closest in terms as qualities from the ones I own. The fit (with guides and proper tips), bass, soundstage (as it relates to iems) is great on the GR06s. After owning the XE200PRO for a little while, I finally found some tips that would make them fit better from the Monster sampler pack.
I just finished listening to a little Black Rose Immortal on the GR06s and I am exhausted...lol....A wonderful 20 minutes indeed that my right nozzle is loose. The GR06s also have an adjustable nozzle but I can't seem to tighten it up.
I posted this in the GR07 thread as well hoping someone can lead me in the right direction to tighten it.
Quoted from the GR07 thread:
Need a little help from you experts here and that have had them for a while. The GR06s also have an adjustable nozzle, which is great, however, I can't seem to tighten the right one. It just moves all around. Once it's in my ear it's not a problem since it does not move. I looked at my left one as well as my GR07s and they are tight. I don't know if you just screw it in, since there is like a ball joint attached to the housing.
Any help would be greatly appreciated.





















