Well, it's your choice. It' always good to have a performer like the gr07 as a backup. Glad you're liking your new toy - it was time to get something crispy. I'm kinda interested in the H-100 but I'll wait a little bit as I'm still to get my R1 (damn customs) and the new vsonic VC02, so probably won't be getting anything new till Christmas (unless gr08 comes out ). I briefly checked some of the opinions on the H-100 but didn't quite get it - is the sound V-shaped?
Some are describing H-100 as a mild U shape and others a V, to me it sounds rather neutral, granted mids are slightly thinner than GR07 and recessed a touch (not as much as TF10) but it causes illusions because the soundstage is so deep when a track calls. It's very crisp leaning towards bright without being overly cold, sub-bass is deeeeep tight and powerful, there's absolutely no bass bleed, makes GR07 bass sound slightly bloated or over done. H-100's focus is soundstage, bass and treble, there's sooo much air in the stage. Clarity is something else. I never thought there could be too much clarity, if I engage BBE+ past 4 there's too much ruining the presentation.
I timed them with waiting for GR08 never expecting to be so impressed. You can get them for $120 - $140 EMS shipping included through ShinWoo if you mention Head-fi.
And for some reason with the C3 they become mid and treble focused, very energetic while remaining crisp, vocals come right forward leaving instruments in the back ground a touch. It comes ever so close to edgy without pushing to far. Very high resolution sound.
Wonderful balance. My first Hybrid IEM and I'm overly impressed.
Edited by H20Fidelity - 11/5/12 at 7:21pm