Which flash memory is the best?

[Saint]

there are so many to choose, cpmpact flash, SD/MMC, memory stick etc.
I just bought a card reader, USB2.0, now plan to invest in flash memory, donno which is better?

 

[KaneOris]

I heard of a thing called a skeleton key, seems to be the best memory stick of them all :)
Has about a gig so I am told

 

[Sirus]

SD cards are the best IMO. They are the smallest in size for a given capacity and have the largest possible future capacity (8GB). For comparison, Compact Flash is technologically limited to 2GB. I have a 256 MB SD card I use with a Fujifilm S5000.

 

[Saint]

Compact Flash is technologically limited to 2GB

Why?
I also plan to buy SD for my camera.

 

[hitssquad]

How newer compact flash breaks the 2GB limit

Compact Flash is technologically limited to 2GB

Why?

Older digital cameras only used FAT16 formatting and so all compact flash (CF) has to also use FAT16 in order to be compatible. FAT16 addressability is limited to 2GB.

Newer digital cameras can use both FAT16 and FAT32. CF can be manufactured for either one, but manufacturing CF with excusive FAT32 compatibility is not economically feasible since such CF would be incompatible with legacy digital cameras. The very latest high-capacity CF solves this problem by simultaneously offering compatibility with both FAT16 AND FAT32:

• 4GB Compact Flash Card[/size]
  
  SanDisk also just announced the first 4 GB CompactFlash card that can be used in any CompactFlash device.
  
  The card features a three-position switch so consumers can choose between either a single 4GB (FAT32) volume or two separate 2GB (FAT16) volumes. The switchable 4GB card ensures that users of cameras with either file format will be able to use the new card...
  
  The File Allocation Table (FAT) is an area on storage media that contains certain information such as the location of data files, their names, sizes and so on. FAT16, the initial file allocation table that is used by a number of current and most older digital cameras, cannot use CompactFlash cards that are greater than 2GB. FAT32 uses a 32-bit number to point to where the pieces of a file are stored and circumvents the 2GB capacity limit to allow access to storage media up to several Terabytes.

 

[Saint]

a salesman told me SD is better than MMC, true?