I recently made the jump to HD with a great deal on the Sony 370 Blu Ray player. I am stunned by the picture quality of Blu Ray discs on my 40" 120Hz Samsung LCD. Perfectly happy. However... SD DVDs are problematic. The 1080p upconvesion is decent, but my old Oppo 720p upconverting DVD player looks a little better. But that's not the main problem... IT STUTTERS!!! Every 20-30 seconds the picture seems to loose a few frames. It is extremely annoying to the point of unwatchable. Do I have a bad unit or is this the kind of crap I can expect from a low-end player? Thanks for any info!