I've been using the GR07 CE for 3+ weeks now. Overall I'm very satisfied!
Two outstanding issues:
-The stock tips didn't fit my ears, so switched to Meelctronic tips. Much better but not perfect. This is likely an issue with my ear canals and not the Gr07. I have foam core Sony Hybrids on the way from Japan via Amazon - as mentioned in the Gr07 tip thread, Crossing my fingers that will help. I haven't tried the included foam tip. I hate the idea of using a consumable tip.
-The over ear cable guide always flops out. It's annoying but I can't say it interferes much once they are inserted. But still, they get in the way.
Unfortunately the GR07 isn't my go to IEM for the subway or when walking outdoors. I definitely wouldn't use in the gym or running outdoors.
Are there good over ear cable guides (ear guards) that work with the GR07 CE - better than the stock?
For the ear guides, my experiences:
My first pair came with a slightly more rubber-feeling earguide, which is a bit more stiff.
The other pairs came with the "current", I guess, ear guides, which have the same shape, but seem to have a slightly more matte feel over the more glossy "rubber" of the first one.
What I will say is that if you use the ear guides enough, say 1-2 months, they will soften significantly from use, and I'm guessing the warmth of wearing them. Mine were quite stiff before, but now they are very supple on some of my pairs, and now if you pick the IEM up by the end of the guide where the cable comes out on its way to the Y splitter, the the weight of the housing will make it drop and bend alot, whereas before it held its shape better.
This means that once worn in and softened, the ear guides will conform much more naturally to your ear and won't want to spring out easily, or at all.
Downside to this is that the cable guide can become so soft that the cable starts popping out more easily, but just a small slim piece of electrical tape on either end should take care of them and keep them together if need be.