I have a Sony DSC-V3 it will take memory sticks or compact flash cards type 1 only. What is best to use? Lexar has 4x, 12x, 40x and 80x speeds CF cards and they have memory stick pros that say "Write Speed 20MB/sec. "

Sandisk has Ultra CF cards and regular CF cards they are cheaper than Lexar then the Memory stick pros say "High-speed data transfer rate of 15Mbps for DVD-quality video in real time"

I think i will buy a CF card since they cost less than a memory stick but all this is confusing which CF card do i need? I don't want to get one that's to slow or one that's faster than what the camera's write speed is.

Please help!