If you need to listen in really noisy places, you're going to be disappointed and deaf with RE262, GR07, TF10, and all other large, plasticky, chunky IEMs. They may sound great but they won't seal as well as a slender IEM like GR01, HF5, or R-50/B2 can. And the custom from CE would isolate the best of all and really save your hearing.
As for your preferred signature of punchy; detailed; bass-present; this would be an area for TF10, GR07, and possibly the custom CE IEM. All the others like GR01, HF5, R-50, X10, B2, RE262, etc. won't give you a fat low end -- though they still could sound great to you, if you're not totally sure how much low-end you like.
I'm already almost deaf so it's not big deal xD
Seriously, that's the why i thinked the HF5. I don't exactly know the benefits of a triple BA driver(one for high, one for mid, one for low, i guess) , but i only know that with customs i should get only 2 of them ( low + mid & high ? ), even if this is compensated by almost perfect isolation, after all.
Anyway, i've to find an audiologist near me, too.
Maybe it's better for custom to wait until i can buy at least an hybrid ( dynamic driver + 1 or 2 BA driver ), non?
Btw, i know it's not the same, but with a CAL! straight out from ipodtouch4, flat, bass aren't enough for me. With the FiiO E6 amp and preset it's perfect.
For me the GR01 has just the right amount of bass. I never find it bass light, but i never find it bass heavy either. I think it is the perfect quantity for rock and metal. Its fast, tight, and punchy and can still dig fairly deep when needed. Its actually quite surprising how much bass they put out when you consider the size of them, they are very tiny. I actually sometimes also listen to electronic music with them as well and its still quite enjoyable. Of course if you like your music with an exagerated bass these will not be enough, but for accuracy and bass quality these are great. The bass is still quite present, its just presented in an accurate manner, not a slow and bloated way.
As for isolation, its above average with the supplied double flange tips or the foam monster supertips.. Id imagine it would be close to or the same as an etymotic with triple flange tips.
In case i'll buy TF10, i've already found double and triple flange compatible ( from MeeElectronics or Monster Turbine ).
I'll search some more review of GR01, GR07, TF10 and HF5, and wait for some impressions from Cosmic Ears owner.
Edited by LaninKhan - 9/26/12 at 1:49pm