Best class SD card?

I have got a Fijifilm Finepix s3400 and i want to know what is the best class of sd card?
I have a class 10, 16 gig in in now but it only allows 9 minutes of hd (720p) recording and i wish to have more.
Answer #1
SD card classes represent the data transfer rate. The higher the class, the faster it is in recording or copying data. So class 10 is the best as of now for normal SD cards.
If you want to record more, you’d have to get higher capacity SD cards by the names of SDHC and SDXC. SDXC’s can go up to 128GB (and can use UHS I or II for even faster transfer rates), provided your camera supports it.
Lexar makes some good SHC and SDXC cards.
http://www.lexar.com/products/sdxc
http://www.lexar.com/products/sdhc
Hope this helps. Cheers.
Answer #2
It depends on the gadget you put in to. Most phones wont show a difference between Class 4 and 10.