I'm looking for something large so that I can put a movie on it or something, and I want it under 20USD, the thing is I've never heard of Digital Media Source so I don't know if they are reliable, not just that but they say, "MicroSDHC" which I am not sure if the BlackBerry 8800 with the latest OS will read it or not.
From wikipedia: SD Cards and SDHC Cards have Speed Class Ratings defined by the SD Association. The SD Speed Class Ratings specify the following minimum write speeds based on "the best fragmented state where no memory unit is occupied":
* Class 2: 2 MB/s - 13x
* Class 4: 4 MB/s - 26x
* Class 6: 6 MB/s - 40x
I've had PNY and Transcend SD cards, Storage these days are pretty reliable and won't fail on you in most situations (but it can happen).. Your better off with the bigger SD card if you know you will have a need for the space.