I've decided to purchase either the DSC-P150 or P100, but I don't know which flash memory to buy. Clearly I want the High Speed variant of memory, but it's unclear if I should purchase the PRO or PRO ...

To start with, I have an Asus A7N8X Deluxe motherboard, with two Crucial PC2700 512MB sticks, and an AMD Athlon XP 3000. I am not overclocking anything and as far as I can tell I have no overheating ...