Hi,
As far as the memory stick, i use it to capture some quick stills, the resolution is maxed at 640x480, so not quite full screen SD resolution, the stills are not that great, the camera though is really good. I continue to be thoroughly impressed with it's low light capabilities. I have shot in serveral instances outside near dusk and got really great results when other cameras give you grain. I am glad I bought this camera. As far as tapes go, I use sony brand premium tapes and only shoot in standard speed.
Good Luck and Happy Shooting!
John