Sansa Fuze 8GB and Memory

I just bought an 8GB Sansa fuze and need to know what capacity micro SD card I can use. I’ve been told that if it is a 2GB, I can only add a 2GB card and with a 4GB, a 4GB card, and so forth.  If this true?

Thanks in advance for any and all replies. 

Not true. Any microSDHC will work.  8, 16, even 32.

When there are newer microSDXC cards, those won’t work. 

Thank you for your response. I am going out and geting a 16GB card.  This will increase my overall capacity to 24GB.