I watched the whole Star Wars series again after a long time and, I know I am going to ruffle a few feathers with this statement, but again, I felt that I/II/III were far better than the original IV/V/VI.
In fact the original movies had so little story that they felt only slightly better than the recently launched ones.
I guess, I just feel that the story of Anakin Skywalker has been told much better than that of Luke Skywalker. In fact, even the new movies show a lot of details about Jedi life whereas the training part shown for Luke was barely for a few minutes. The original movies felt a little bit rushed to me as they tried to cram a lot of stuff into just 3 movies. Of course, all of this only holds true because of the way the later movies and then the awesome animated series Star Wars: The Clone Wars got made and gave us a lot more insight into Anakin's life whereas Luke only got those 3 movies. If only treating the first 3 movies as standalone, then they definitely are pretty good.