Ok, so I am finally going to break down and buy a new, bigger SD card.
Comparing Price vs. Capacity: I have decided on a Kingston 8GB SDHC
Now my questions are:

- Should I stick with the Class 4, or go with the Class 6?

- What is the max transfer speed of a 700wx (running WM6.1)

- Would using a Class 4 Micro SD in a SD Adapter be any slower or less reliable than a full size Class 4 SD?

Thanks in advance!