An off brand that works well - Silicon Power Compact Flash 120X Hi-Speed Memory Card SP002GBCFC120V10

I've been using two of the 2GB Silicon Power CF memory cards for nearly a year in my D200 Nikon. I've regularly plugged them into both my Mac and my PC as well as the occasional other computer. I always format in the camera after I've transferred the images. They are fast enough to keep up with the camera's 3-5 F/S shooting speed and have never given even a hint of a hiccup or glitch of any sort. This has been a quality product for me.
Pros: Price, Speed, Capacity
Cons: Can't think of any

This review was written in the old system and had content requirements that are different than reviews written today.