Kingston 4 GB Class 4 SDHC Flash Memory Card SD4/4GB : Well I was real happy to see that 4gb cards are so affordable now as I was really needing one. So far Kingston 4 GB Class 4 SDHC Flash Memory Card SD4/4GB worked just fine and no problems with data retrieval.

I really like the larger size cards because I can use it in my GPS or my computer or my Camcorder, whichever I feel like messin with that day.

All in all, great product and a really great price!
See More Detail : Kingston 4 GB Class 4 SDHC Flash Memory Card SD4/4GB

SanDisk 8 GB Class 2 SDHC Flash Memory Card SDSDB-8192 : The SDHC memory card is a highly secure stamp-sized flash memory card, which can be used in a variety of digital products: digital music players, cellular phones, handheld PCs (HPCs), digital cameras, digital video camcorders, smart phones, car navigation systems and electronic books, that follows the SD 2.00 specifications. The SDHC card has a security feature for protection of copyrighted data.
See More Detail : SanDisk 8 GB Class 2 SDHC Flash Memory Card SDSDB-8192

Transcend 8 GB Class 6 SDHC Flash Memory Card : This is an awesome piece of technology. Regardless of transfer speeds (which are pretty reliably fast with Transcend 8 GB Class 6 SDHC Flash Memory Card) the fact that you can get 32gb of memory in a piece of plastic that small and still be relatively affordable is simply awesome. These cards are ideal for camcorders (don’t get the slower class-2 or class-4 cards. You risk losing data when writing to Transcend 8 GB Class 6 SDHC Flash Memory Card), or virtually any other application. I use them in my Cowon O2 and Dell Mini for holding all my media files. I get read speeds of about 18mb/second and write speeds of about 11mb/second, which is quite respectable in my opinion. That’s about as fast as SDHC technology is going to take you; if you want faster wait until Solid State hard drives are standard inside camcorders and audio players.
See More Detail : Transcend 8 GB Class 6 SDHC Flash Memory Card

The price was rather good. The packaging (boy, they even want you to give a star rating to packaging – c’mon, it’s a little package that holds a card the size of a postage stamp) is standard retail stuff. The MicroSD card and the adapter both work great, and, of course, the most important thing: the write speed for this Class 6 card is nice and speedy. It’s just what the doctor ordered to use with my HTC Incredible… the first phone that truly is… better than the iPhone.

Transcend 16 GB flash memory card works great with my Kodak EasyShare Z812IS. I have not had any problems with Transcend 16 GB flash memory card. And you just can’t beat the price. Also according to the paperwork I received with Transcend 16 GB flash memory card, it comes with a lifetime warranty.

From the Transcend website:
Effective January 1st 2006 the following Transcend products are covered by this warranty for life, SD series, MMC series, CF series (except Industrial CF cards) memory cards and JetFlash series USB flash drives (except JetFlash 210).

SanDisk SDSDQ-016G microSDHC Card is the best in the US market. Samsung has developed a 32GB one but it is only available in Asia at the time of this writing. With that said, this is a good card. I bought it for my Blackberry Curve 8300. If you are going to use it for a Blackberry, make sure that you have the Blackberry OS 4.5 or later as it will not read the whole 16GB if you do not.

Even though this is a Class 2 card (the 16GB Class 4’s, like the 32GB cards, are only available in Asia right now), it reads and writes fairly quickly. The SanDisk SDSDQ-016G microSDHC Card is fast enough to record and play videos on my Curve, and saving a couple minute video after shooting it literally takes seconds to write.

Bought about 5 of these for $3.34(three.thirtyfour) each about a year ago.

Transcend 8 GB Flash Memory Card is reliable and am satisfied with the purchase.
I really can’t tell the difference between class 2, 4 or 6 but I went for the higher class rated card.

However, in about a year Transcend 8 GB Flash Memory Card has become too small to hold data with the increasing amounts of data that I need to store on my digital camera/camcorder and I wish I had bought 16GB or 32GB from Transcend when they were cheap compared to today’s prices.