Bought for "emergency" boot flash drive, for DOS utilities - 4 Gb is best. I use it to copy / restore / maintain systems on RAIDs - it's convenient, it sees arrays without additional drivers. The speed under the OS depends on the settings of the OS (and antivirus).
Kingston DataTraveler flash drive 100 G3 256 GB, 1 pc. black
74 Review
Compact and Convenient: SanDisk Cruzer Fit USB 32GB Flash Drive (SDCZ33-032G-A11)
66 Review
Titan Gray Samsung BAR Plus 256GB USB 3.1 Flash Drive (MUF-256BE4/AM) with Up to 400MB/s Transfer Speed
69 Review
Samsung BAR Plus 128GB USB 3.1 Flash Drive - 400MB/s - Champagne Silver (MUF-128BE3/AM)
65 Review
Game console Microsoft Xbox One X 1000 GB HDD, black
53 Review
Shock-Resistant Transcend StoreJet 25M3 USB 3.1 Slim Portable Hard Drive with 500GB Capacity
99 Review
2 TB External HDD Western Digital WD Elements Portable (WDBU), USB 3.0, black
84 Review
18 TB External HDD Western Digital WD Elements Desktop, USB 3.0, black
95 Review