USB Flash Drives as what we use nowadays, it has been popular since it releases huge capacity Flash Drives like 512MB, 1GB, 4GB and many more capacity beyond our knowledge.
So, what this mean to what I am saying? Its because we evolve from technologies every now and then, the technology updates from time to time basis. Unless we are still using the 3 1/2 Floppy Disk with 1.44MB memory (some schools, organizations, company, etc. still uses it).
In a USB Flash Drive you can store as many files as you want as long as the Flash Drive can accommodate more files from its capacity. And also there are MP3 Players which bloomed for entertainment, MP4 Players for video and can also play MP3. But the disadvantage of MP4 Players is the video screen-size is small which must be compatible with the MP4 Player the file is in and the audio is still crisp.
We should think what kind of USB Flash Drive we want to buy. Also know the best brands that are durable, compact, reliable and accurate for our everyday usage of it. Allowing these kinds of USB devices will hit the market and thus allowing everyone to use it for their everyday needs.
Buy only what is needed and buy it from a known retail store. See to it that the retail store is providing warranties with the product, so that when its busted its available for exchange or repair.