I think both have great PQ and AQ. I have the tos hd-xa2 that is a great upscaler for SD -DVDS for my sammy dlp. I have a lot of sd-dvds and have no playback problems nor with the hd-dvds. The ps-3 and the bd- players also have great pq/aq. I decided to go with the HD because of the finished specs. I think the bd new specs should be finished!!! around Nov.1. If I were going to get a bd player I think I would wait until then. Anyway enjoy the HD experience. Good luck!!
I have a Samsung DLP also. HLN617W. I only have an Oppo 871 upconverting for SD DVD's. I think the picture looks really great! I do hear now and then about people going over to HD DVD players...either format. Is your DLP 720p like mine or do you have 1080p? If it's 720p is the picture quality that much better when watching an SD DVD in a HD player?
