I purchased the 16GB version (
Transcend 16GB SDHC CARD with Compact Card Reader) of this package a few months ago. The card was meant to be used in my Canon S5 camera. But I soon discovered that it works extremely well with the included card reader as an USB flash drive (much larger and faster than my
SanDisk 4GB Cruzer Micro). So I ended up using it mainly for data backup and transfer between my laptop and desktop computers. The card has proven to be fast and reliable in the past 2-3 months of daily usage.
As first I was skeptical about Transcend's speed rating of 'class 6', which means minimum 6MB/S when writing. But my own benchmark results (see Customer Images) showed that this card is capable of writing typical photo files at 10.5MB/S - nearly twice its specified minimum data transfer rate. Just for reference, the
Sandisk 8GB EXTREME III claims a faster speed of 20MB/S, but it costs about twice as much.
Considering its low cost and respectable speed, this Transcend card is an excellent buy. But please make sure that you order it from a reputable vendor only. Several reviewers who ordered the 16GB version from TheMemStore complained that they received some no-name card reader (instead of the Transcend DRS5). This may explain why some people have encountered problems when using this card.
[update on June 8, 2009]
I have purchased a total of three Transcend SDHC cards (two 16GB + one 8GB) in the past 10 months. They all worked perfectly so far. The second 16GB card is for use in my new
Canon Rebel T1i/500D. I have heard that some other brands of 'class-6' cards cannot keep up with the camera in video mode, and will cause buffer overflow within a few minutes. But the Transcend card has no problems at all. I'm going to purchase my 3rd 16GB card next.
[Update on Sep 14, 2009]
I have highly recommended Transcend SDHC cards in the past, becuase they were much cheaper than Sandisk Extreme III (class-6) cards, and worked just fine in my applications. But in light of many complaints about Transcend card failures, and my recent finding that
SanDisk Ultra II (class-2/4) cards are just as fast as Transcend 'class-6' cards, I must now recommend Sandisk Ultra II as a better and safer choice.