I will be writing this review for both SanDisk Extreme SDHC class 10 8gb and Transcend SDHC class 10 16gb.
I bought SanDisk class 10 and Transcend class 10 for my new Panasonic LX5. I got both card because no one really did a comparison with a compact camera and I was just going crazy trying to see if there is any big difference between the 2 cards.
SanDisk Extreme package box indicated it's water proof, x-ray proof, shock proof, temperature proof. I am not ready to spend $50 to see if it really stand up to it's words. And I don't think normal people would go through the extreme condition in taking pictures or videos.
Cut the story short, I really want to see if there is any difference in writing performance between the 2 cards in a compact camera. There is a continuous burst mode in LX5 and the manual indicated it is only limited by the condition of picture environment and performance of the SD card. Within the mode there are 2 different settings:1) speed priority or 2) picture/quality priority. The shutter speed is much faster with speed priority compare to picture priority.
I first formatted both cards out of box then put each card in series of test(3 rounds each setting for each card) shooting at the same object under same lighting condition. The results: Speed Priority: SanDisk Class 10 8gb 22-33 shots before camera stopped to allow the card to catch up with writing.
Transcend Class 10 16gb 22-24 shots before camera stopped to allow the card to catch up with writing.
Picture priority SanDisk Class 10 8gb 34-46 shots before camera stopped
Transcend Class 10 16gb 27-33 shots before camera stopped
It seems that at a higher shutter speed, both cards performed very similar under the same shooting condition. But at a slower shutter speed the SanDisk definitely out perform Transcend. I hope this little experiment satisfied anyone with curiosity like me. Transcend definitely is a bargain with 16gb and almost half of the price compare to SanDisk. But I am going to use SanDisk Extreme as my primary card and Transcend as backup or on a second camera to ensure i would not miss any shots.