well I usually buy directly from supplier 
you can always ask for sample, more of that you can always choose better spec for cheaper price but as always had with them problems, but they send me new items as replacement, didnt even had to return old ones :D bought 1 gps but it came not the design i wanted, so they send me another one which i wanted :D so one I gave to my father second one for myself :D
china products are crap, but for some basic function devices its better buy china ones rather buy genuine and pay huge amount for it bought china hunting led flashlight, it cost me cheaper with extra led and battery than same one without extra on dealextreme that flashlight is real beast :D
you can always ask for sample, more of that you can always choose better spec for cheaper price but as always had with them problems, but they send me new items as replacement, didnt even had to return old ones :D bought 1 gps but it came not the design i wanted, so they send me another one which i wanted :D so one I gave to my father second one for myself :Dchina products are crap, but for some basic function devices its better buy china ones rather buy genuine and pay huge amount for it
bought china hunting led flashlight, it cost me cheaper with extra led and battery than same one without extra on dealextreme that flashlight is real beast :D