[The Doctor]

I have the Diamond and REALLY LIKE it compared to my Mogul.
I do miss the keyboard.
I am considering a return to get the PRO but I would like to figure something out and I have not seen any posts on it:
Is the four gigs of "Storage Card" memory in the Diamond faster than an inserted mini SD in the pro?
I ask because I've always read that some flash memory is able to be written to and read faster than some SD flash memory.
I guess it's the same but not sure.
It could amount to a big difference when watching movies/transferring files etc...