I like Word for the Change Tracker feature. My beta readers use it constantly and I use it to track edits.
However, yWriter makes switching scenes around, does files in rtf which is pretty much universally compatible and, of course, is free. It gives me a word count for the entire novel without combining chapters and scenes which I like. I’ve actually taken to writing novels in yWriter then switching my files to Word for editing. I had tried about every softward out there and yWriter was the first one that tempted me from Word.