You never doubted that Laforge knew his stuff--he had the biggest techno babble scenes I have ever heard. This dude was married
I could never understand Torres being the chief engineer. She had only a year or two at the academy, and then dropped out.
And then Janeway makes her chief engineer over more experienced engineers -she runs operations, writes schedules, reports, disciplinary actions etc.
Though I like her character, it was too Wesley Crusher-ish for me.
Overall I go with Scotty-I liked how he doubled as the 3rd officer, and he had great lines. Laforge knew his engines, but Scotty was in love with them.