Like you I used Word for all sorts of documents (heuristic analyses, UI reviews, early-stage research, etc.) and loved all the template controls and the like. However, the consistent the challenge was sharing via WebMeeting or other screencast.
In response I moved a few templates over to Keynote and/or PowerPoint with great results. You can still create templates (master slides for various pages) and achieve a similar results of 'drag and drop in' in images by using masking or the like.
In some ways the end results are better for reports because the limited space on a slide pushes you to edit your findings into tighter statements and observations - which I see a positive work process.
If your work environment values easily-presentable findings I'd consider one of those two programs.
(Bonus - there are great UX/UI prototyping kits like Keynotopia with templates, images and elements to add details to your final product.)