QUOTE(beederbest @ Feb 15 2011, 01:50 PM)
I would describe 381F as tight and punchy. bigger bass than 668B and sufficient to my ear. but 668B's bass is a different surround effect bass, different feel. great for me too. =) just like how it compare to 681 which has bigger bass but i feel 668B simply sounds nicer n smoother.
Added on February 15, 2011, 1:54 pmthen what r u waiting for?
I gave up on gumstick too, of course the SQ part really blast me, but not the battery and firmware part.
another thing is Cube C30 has better firmware update whereas for gumstick u cant really find any official firmware update on their official website.

I was waiting.. for a decision on the colour!

Will post at your bulk thread soon.
I gave up on gumstick due to the price and the fact that I just want to try some other IEM. Then came along your offer, which 'fixes' both of the reason why I didn't get a gumstick in the first place.
I was aiming for 381, but for a guy whose only IEM is Sony's stock HPM-77, Cube F1 might do good for now. Besides, I'm gonna get my 668B soon.