My PSP came with a 1GB MS, but a week ago, I decided to spend $25 to get an 8GB MS. It sure helps to have all that memory to put games, videos, and music on to it. What size of MS(s) do you have?
I have a 1GB and 2GB memory stick for my PSP. I really need to buy at least a 4GB memory stick so I can put more games on the memory stick without having to always switch them out.