I provided these impressions to a fellow head-fier. Figured I'd post a very slightly edited version here as well...
"I can't really find any fault with them. They seem to technically very good. Great quality bass, not much (if any) of a mid-bass hump or bleeding into the mids. Very nice and fairly forward mids. Very nice, detailed and extended highs (glad they are not any brighter though, since I am sensitive to that - but further burn in should work to my advantage in that area). Nice overall warmth and timbre. Really, pretty amazing relative to the iem's that I have had experience with.
I find the soundstage to be fairly wide, and the instruments separated nicely in that way. If there was more depth, then that would be awesome (I'm thinking the 3d quality of the xba3's for instance). But that's about the only thing that I can think of to improve them. So overall, I'm extremely happy with the SQ.
Physically, I love their flat profile (relative to something frankenboltish like my fxd70's) - I can lay in bed and fall asleep with them. And I love the cable: thick, tangle-free. I like all of the tips and the ear guides that were provided, although I wish they also provided a clip. I am coming to the realization that I prefer straight down iem's compared to over the ear (simply because I take them off and on quite a bit), but that's just a personal preference.
Also.. I find them to be very comfortable as well - they stay in the ears nicely (not like the mh1c's or the fxd70's). And, I really like the way the nozzle angles can be adjusted."
Edit: there is some chance that I am out to lunch on my "depth" impressions lol. I will report back...
Edit2: I compared the gr07be's with my other iem's while listening more closely to some tunes that present some good layering and dynamic range. This little test told me that I was liquored when I said what I said above about depth and 3d-ness. It really highlighted that the layering, 3d-ness, instrument separation, detail and speed of the gr07be's was by far superior to any of my current iem's. It also highlighted the wider dynamic range - I'm hearing lower lows and higher highs, and it's all sounding awesome. Hmm, so I guess these things are pretty much perfect after all 
Edited by waynes world - 3/13/13 at 9:13pm