Bests & Worsts Reviews from Amazon

This drive runs unusually hot for a plastic flash drive. Even sitting without reading or writing while plugged into a USB extension cable, the USB connector gets uncomfortably hot. No other flash drive I've tried has this issue, although I understand that some metal cased ones also exhibit this behavior. The second problem is that writes are slow, painfully so for small files. I should have paid more attention to the reviews here stating this fact. After doing some research, I bought the SanDisk Extreme CZ80 64 GB flash drive as a replacement. It runs much cooler, and the write speed is 5 times as fast for large files and 20 times as fast for small files (this is with both drives formatted as NTFS). I was even able to pick it up on a Daily Deal for only $7 more than the Ultra CZ48, but even if you have to pay twice as much it's worth it in my opinion. I don't recommend the Ultra CZ48, but I highly recommend the Extreme CZ80.