If you've used both NVIDIA and ATI video cards, which seemed more stable to you? I've had a few NVIDIA cards and, most recently, an ATI card (X1300PRO). A few weeks ago, DVDs started playing without video in my PowerDVD screen until I went to the ATI Command Center and clicked the video playback setting, which I guess reset it. Each time, I had to do it more times before the DVD's video would appear. I finally got sick of it and put my FX 5700 LE back in, and now DVDs start playing like they should. Also, the ATI Command Center screen was always slow to load during startup; the NVIDIA settings icon in my system tray is the first the load. Overall, NVIDIA just seems more stable (I understand the 5700 LE is slower than the X1300PRO, but I'm talking about stability). What has your experience been?