Legit Reviews posted a review on the SanDisk Extreme III 4GB SDHC Flash Card
A quote from the article:
>> SanDisk Extreme III 4GB SDHC Flash Card Review
SanDisk Extreme III SDHC memory card features 30MB/sec sequential read and write speeds and has been optimized continuous shooting capability for cameras like the Nikon D90. If you are looking for ultra fast download speeds when you offload your photo and video content read on to see if this Flash card is right for you!
>> SanDisk Extreme III 4GB SDHC Flash Card Review