I actually think the roundup is pretty good. Yes, it's not in-depth and complete, but it's pretty good for what it is. I have a sympathetic perspective since writing the notetaking roundup and understanding how much work it is do do a comprehensive review. I think the file-manager category is even harder to review than notetaking (more programs, more general purpose...nightmare for reviewing).
My two favorite file-managers are Directory Opus and Total Commander. If I only had to choose one, it would be Directory Opus, because nothing comes close to it's power and customizeability...I dare anyone to find a program with more features. Total Commander is really fast, but it's not like the other programs are so slow that it makes them unusable. I've never really understood that argument, unless it applied to really bloated software. But most of the software on that list are pretty fast and efficient, and a few milliseconds is not going to affect my bottom line decision that much. Another thing about TC, yes it has tons of plugins, but very little documention, and also, most of those plugins are not of any use to the average joe. But there are several plugins that are very useful. Finally, the one feature that made me discover DOpus when I was using TC was the lack of a directory tree. In DOpus and most of the other programs, you can have a directory tree AND the two panes, but not in TC.
But both programs are fantastic in their own right, and I use both still...however I use DOpus much, much more. And a lot of those other programs are great also. This is one of those categories where there are many really great choices, isn't that always great!
PS Navigation, especially keyboard navigation in TC, is the best. For you keyboard gurus, TC is the app for you.