Ah ayub, you simply werent
there 
in their original form, the movies look better- they have more character and better music. There are more henson creature shop creations, less CGI so the interaction between actor and 'thing' are much more real. They just work better as films- dont knock it till you tried it

the newer films fight style was ok. I particularly thought Darth Maul vs Qui Gon and Obi Wan was incredible, but the rest of it never quite matched that level (they killed him too soon IMO- he deserved a rematch).
None of the fights after had the 'emotional content' to get you involved. When Luke fights Vader it
feels important, and the actors convey the life or death gravity of it very well. The later movies were more 'twirl sabre, look cool, force slap 20 droids.' Rinse, repeat.
Episode 3 was the best of them. Menace had young Anakin (the force may have been strong in him, but his acting skills were terrible). Attack of the clones was just too much talking to justify a very linear final set piece (padded it out badly), then Revenge of the Sith saved the 'second' franchise's a$$ by being good all the way through. The fact that critics were suprised shows how far the Star Wars rep had sunk with the prequels.
The old school star wars will never have the 'wow' factor they did when they came out. in today's world of CGI anything can be filmed, back then there simply was nothing like them in the movies. They made todays blockbusters possible.