Of course, there will be trade-offs between accuracy (advantage: LaTeX!), steepness of learning curve and eventual speed: I've found that typing code tends to be quicker than working with a clunky menu system.
For myself, Wordperfect 9 (from Corel's Office 2000 suite) was far superior to Word 2000, with or without the third-party plugin. Today, Open Office beats Wordperfect 9. How does Word 2007 fare? Finally, which implementation of LaTeX in Windows (or Linux, et al) is best?"