I've used many different brands and models, and I've had problems with many of them except for all the SanDisk cards, which all work with no problems. I learned my lesson a while ago, and only buy SanDisk CF and SD cards for my Amigas now. I install and format them in real Amigas, and have used them in IDE and PCMCIA adapters in A1200s, A600s and a CD32 with SX32.