I like the NEXUS 16GB Throw-A-Way Units that sell in a BOWL like Jelly Beans in a Candy Store from the Source (Old Radio Shack for about $10). They are NOT USB3 fast but would say a steady USB2 Read/Write. They are small (about the size of a 50 cent piece) , coated in various colours of removable heavy rubber - very rugged durable and dependable - I've got dozens of them - Perfect for keeping all kinds of Data (MP3`s, Movies. Apps... etc) or say DOS FAT32 Compressed Ghost Images of your OS - Make them DOS FAT32 or EFI UFI Bootable (Whatever) for Window Installations with your App and Program SetUps = Perfect Installation and Storage THUMBS - Wish they made them BIGGER Volumes but then they may be susceptible to damage.
The fastest Thumb I've encountered for DATA Transfer is the Alu-Cased ADATA AS102-32G-RGY Pro 32GB USB3.0 100MB/S Read 50MB/S Write at about 18 to $22; however, they are prone to damage: BUT, they are guaranteed for LIFE. I have RMA`d several of them. Just make sure you remove all data off them between uses because if you drop one, it can quit.
You can throw a NEXUS against a cement wall all day long and it will never die - Still got the 1st one I bought (Can`t remember which one it is) - At $10 for 16GB WTF - BUT - If it`s speed you want, look at the ADATA, great Warranty but not dependable - Just how much Tape and Magic Markers can we use to Defrag. I've wasted most my life saving TB's of outdated Data; but, that's what makes us and what is it?