Darth Vader vs. Darth Maul and Qui-Gon Jinn
The battle takes place on Mustafar. This is Vader before he gets injured by Obi-Wan, Qui-Gon and Maul from TPM. Maul has his double bladed lightsaber. He and Qui-Gon agree to form a truce, at least until they kill Vader. The battle starts where Obi-Wan and Vader's duel started on Mustafar.
I think this dhould be pretty close. Vader's definately the strongerest out of the three but Maul's pretty strong and possesses saber skills that arn't to far behind Vader's. Qui-Gon's pretty strong, too. Who wins?