I have a Samsung DVD Recorder Model Number: RDR-GX355. I wanted to know if a standard DVD, (4.7GB and 120 min. of recording time), can record for longer time periods using the long play mode. I'm not even sure my recorder has this. Adding to that, I wanted to know if using the long play mode on anything will affect the end quality of the movie/image/show. Or if my recorder can't record in long play mode, should I invest in the DVD-R DL which gives my 8GB and 240 min. of recording time. I know they are much more expensive than regular DVD's costing usually $15 for ten only.