Hello guys I am using sandisk ultra dual 32GB USP 3.0 OTG PEN DRIVE since 6 months, I am not facing any problems, though sandisk is indeed a well established and trusted brand, I brought it from amazon, the speed and connectivity is really good, but design is not good since it is dual pen drive we can use it in both laptop and mobile because of its design it is so delicate, for its price you can buy sandisk pen drive