Corsair 128GB Survivor Stealth USB 3.0 Flash Drive (CMFSS3B-128GB)

Pros: Fast
Stays cool

Cons: Bulky...not sure if that's a con considering what it is, though.

Overall Review: Some of the other reviews I had read of these drives said the never models ending in B were slow, but I got them anyways. I just ran some impromptu tests using a 30GB file and also with Crystal Disk Mark 6.0.0 x64. I am very impressed with this drive so far.

Specs:
i7-8700K
32GB DDR4-3200
ASRock Z370 Professional Gaming
2 x Samsung 850 EVO 500GB in RAID 0
Windows 10 Pro 1709

USB drive plugged into USB 3.1 Gen 1 (5Gb/s) port on front of case

Windows Copy:
Read - 320 to 400 MB/s
Write - 170 to 200 MB/s

Crystal Disk Mark 6.0.0 x64 w/ 8GB Test File

Sequential Read (Q= 32,T= 1) : 336.618 MB/s
Sequential Write (Q= 32,T= 1) : 204.421 MB/s
Random Read 4KiB (Q= 8,T= 8) : 13.535 MB/s [ 3304.4 IOPS]
Random Write 4KiB (Q= 8,T= 8) : 0.003 MB/s [ 0.7 IOPS]
Random Read 4KiB (Q= 32,T= 1) : 13.526 MB/s [ 3302.2 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 0.005 MB/s [ 1.2 IOPS]
Random Read 4KiB (Q= 1,T= 1) : 13.129 MB/s [ 3205.3 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 0.005 MB/s [ 1.2 IOPS]

Test : 8192 MiB [F: 0.0% (0.0/58.9 GiB)] (x5) [Interval=5 sec]
Date : 2018/03/16 12:08:01
OS : Windows 10 Professional [10.0 Build 16299] (x64)

Pros: There will always be a way to get it to work.

Cons: It will lose your data. It corrupts my important work files regularly. I have had to format the drive a million times and it still loses my files. If you don't click safely remove drive every time you will lose files. Even if you do you probably will lose files.

Overall Review: This drive will take an beating and will find a way to work. You may need to be a tech expert to get it to work, but it will work. I had to trouble shoot for 2 hours today to get it to recognize, but i got it to. I'm returning it to Corsair and i hope the new one actually will be reliable. I'm not optimistic. I've never had such a temperamental flash drive in my life.