I did enjoy the quantity of fights in Ep 3.
But having just one real one entree fight in Ep 1 really made it stand out. The reactors were so bright it made it hard to see, but other than that it was a great fight and not chit-chatty.
So for the best quality of fights between lightsaber parties, it could be Ep 1.
Okay, one other major flaw is that when Obi-Wan ascends from the shaft he has like a full second to strike where Maul just turns around and stands there. I know he has to die for the plot, but give him some reaction for crying out loud, he wouldn't be that slow. He would be surprised and wouldn't have his other saber blade, so I can see him then being defeated in a couple of seconds in surprise, but just standing there? Lame. Lucas missed that one.