Sandisk SDHC memory card confusion

[MScrip]

I'm looking for a fast 8GB SD card. I've got my eye on the Sandisk Extreme 8GB Class 10 SDHC card.

But, Amazon lists 2 different model numbers:

SDSDX3-008G-A31 - Link 1
SDSDX3-008G-P31 - Link 2

Both are listed as Class 10, 30MB/s

BUT, if you Google those model numbers... sometimes a site will show the old Extreme III card, which is a Class 6 card... like this: Link 3

So... I'm a bit confused as to which card to get. Amazon wins because of price... But the 2 different model numbers confuse me... A31 and P31

But, the existence of the older Class 6 cards using the same model number scares me too.

Any thoughts? I want a 30MB/s card... does Class 6 or Class 10 matter? Should I try my luck with one of those Amazon cards?

 

[4x4not]

Both are through "Digital Media Source". You might want to email them and find out if their stock is all Class 10, or not.

 

[Menelmarar]

According to the manufacturer's website, the -A31 is definitely Class 10.
http://www.sandisk.com/products/dslr/sandisk-extreme-sdhc-cards-

 

[450]

Is $50.49 a good price for the -A31 version?

 

[MScrip]

I found some more Amazon funniness. Here, Amazon lists a Class 10 card with a Class 6 picture.

But, if you reload the same exact page... sometimes it changes to another product... that does show a Class 10 picture:

So far today, I've seen 4 different sellers of this product on Amazon, all with different prices. I guess you can keep refreshing the page until you get the price you want.

 

[cyclone3d]

I bet they have one or more servers that the picture hasn't been updated on.

 

[northrop]

Is $50.49 a good price for the -A31 version?

I'd say so. Make sure your camera supports them, though.