Gent-X SG huh? i myself use normal earpiece or bluetooth set my phone for auto answer its good enough already
kopiosatu SG i've yet to find a good one. they sell a set at motoworld, but they told me not to buy it cuz it ain't good enough.
kopiosatu SG no idea. head to the basement. last time i went (some time back), there was only one type on sale.