Reliable, although it's still early. Good transfer speed.
I will update later if anything changes.

It constantly disconnects while transferring files. It is also frustratingly slow (as expected).

Supposedly USB 3.1? File transfers start normally and then drop to 1mb/s, tested on different devices and ports, formatted once, wasted money.

Without many words, I don't judge based on performance, but having been burned in the past with sticks of various brands that either my PC didn't recognize (mostly those with large capacities), or they burned before they could make their money, I decided to return to the only brand that never gave me a problem! It simply works and does its job! I don't need anything more! Happy with this 128GB Stick!

128gb: Garbage! It takes a long time to read it, and when it does, it's slow in data writing! I have tried formatting it as exFat, Fat32, NTFS, even reducing its capacity, and still the same terrible performance! Stay away!

Out of the two I bought, one works properly, the other takes minutes for the PC to recognize it and the writing speed fluctuates up to 10kb/sec. I wouldn't buy it again.

In terms of construction and capacity, I have no complaints, but there is a serious issue with the speed. It does not reach any of the data transfer speeds mentioned by the manufacturer. Now, for 7 euros, it's not tragic, but I won't choose it again.

Quite good product with fast data transfer and LED light that works. The four stars because I would have liked it to be more high-quality

All the USB sticks have a bottleneck in recording as they heat up. This USB stick starts recording at 90+ MB/s and after the first 2 GB it drops to 40-50 MB/s, which is perfectly acceptable. The reading speed is consistently at ~95-100MB/s. It's great.

Value for money at 128GB, but that's about it.

Decent reading speed, slow writing speed. Expected for its price.
On Windows 11, copying a file of about 13GB, average speed around 12-14MB/s. Obviously on a USB3 port.

If you're looking for something cheap with a large capacity for file storage, it's worth it. If you want fast file copying-transferring, avoid it.

I bought it in March 2021 and from the first week it didn't work on all USB ports. One month after the purchase, while the system "saw" the device, it couldn't read it and I was forced to format it. Since November 20, 2021, the device is not recognized by any of my computers. It is best to avoid it.

After 3 months of use, both of them are useless - two PCs do not recognize them and practically go for recycling.

What a pity

It is very fast, especially in reading at 128MB/sec, but also in writing it writes from 70 to 90MB/sec. And the capacity is very good

Not as fast as one would expect for USB 3.1 (around 30-40MB/s on a 3.0 port), but for this price, you definitely can't complain.

Once I bought a Silicon Power 16GB flash drive many years ago for 55 euros, and it still works perfectly. Since then, I only trust SP. 128GB for only 10 euros? It's a steal...

For the money, it's honest. It is very easy to use. I have put songs on it and placed it in the car's CD player. So far, it hasn't caused any problems.

SP Blaze B02 32GB NTFS
USB PORT 3.0

Ubuntu Benchmark
Read 135 MB/s
Write 10 MB/s
Average Access Time 0.3 msec

H2testw - Win 10
Read 96 MB/s
Write 23 MB/s

ATTO Disk Benchmark 4 - Win 10
From 128KB files and above:
Read 100 MB/s
Write 20 MB/s

USB Flash Benchmark - Win 10
From 512KB files and above
Read 106 MB/s
Write 16 MB/s

Formatting from NTFS default cluster to exFAT 32MB cluster (max) is slightly faster in Read, and exactly the same in Write (Win 10)

The flash drive is excellent value for money, but otherwise nothing exceptional. A SanDisk Ultra Fit 16GB that I have gives me Read 126 MB/s (slightly faster) but Write 42 MB/s (twice the speed!).

Conclusion: Unfortunately, the flash drive is mediocre in terms of performance, but its price is exceptional.

Automatically after a while, it goes into recording protection mode and has a complicated process to recover.

One of the best in terms of price and quality from Silicon Power, a well-established company from Taiwan with a tradition in flash devices and cards. It reads at 120mb and writes at 90+ mb in ntfs with a 128kb cluster size. Of course, it is USB 3.0, ideal for fast transfers of large files for television, but also very good for readyboost on old PCs with hard drives. Prefer the 32GB and 64GB versions as they are much faster than the 16GB one, it's not worth the small price difference.

Excellent in speeds, I immediately caught the mentioned ones! Tested with small and large files without any issues or freezes. The build quality and durability are not the best, without meaning that it is cheap. On the contrary, very satisfied with this specific USB.
Recommended!

Update: after several months of use, my opinion has not changed. It remains very fast and I will definitely choose it again if I need to get a new one.

After 1 month of operation, it suddenly displays the message "The disk is write-protected" and stubbornly refuses to delete data, record data, and format. In other words, it is almost useless since it only allows data reading. Various troubleshooting methods found online have been unsuccessful. The official SP USB Flash Drive Recovery Software from Silicon Power has no results.

Flawless USB stick, quite fast in the 32GB model. It reached a read speed of 130.4 and a write speed of 32.12 on a USB 3 port, while the equivalent 64GB model had a read speed of 124.5 and a write speed of 105.5. Definitely quality from Silicon Power!

Excellent USB flash drive, one of the fastest I have ever held in my hands. I used to have the older model and it lasted me until today (over four years), so I immediately went for the Silicon Power Blaze again.