Well my pmd 661 failed me last night. The recording just stopped after 2 minutes. I restarted immediately and it did it again... When I first purchased this recording device they recommended lexar... So bought me a lexar. The card failed instantly. Err 2 err8 ect. So then I switched to transend cards and they worked for 2 weeks. So I called Marantz up and once again they recommend lexar. So I bought another lexar card, but it wasn't very fast. The card was stable, but I notice a digi pop here and there. So once again I switched to a lexar 8gb card and it worked great.. So I needed another card and the bought the 16gb lexar and it failed me again...like the first card I bought. Are these lexar cards crappy? Should I try another brand? I had err 2, err 8 and err 10. Very frustrating to say the least. Who can recommend a good card for this device that's not lexar. Sandisk, Kingston, or who? One thing I know is to test the card out, from beginning to end. Also how are class 4 cards?