Looking to buy SDHC card for 6700 and Touch

[Torx]

Im looking to buy a memory card to use with my 6700, and still be compatible with the touch for when i upgrade.. I dont wanna turn around and have to buy another card but different type.

so im confused as to what card type the touch takes.. if the touch comes with sd adapters, etc etc..

but at the same time i want 2-4gigs of fast memory for my current 6700.
AND i need an SDHC compatible card reader for my PC.

also, what format should i make the card? fat16, or fat32?
only looking to spend ~50 for the card, and ~30 for the reader.. any suggestions? thanks