Pretty good for what it is
Obviously cant edit files, but it says in the first line of the description its just a viewer, so I dont understand all the negative reviews. Ive used it on files as big as 20MB and it works fine. Very useful. 4 stars instead of 5 because its a bit slow when viewing files 10MB+(interface is a bit laggy), you cant do a search unless the raw xml pane is highlighted (took me a while to realize it even had a search function, you have to click the right pane first), and I think the interface could be a tad improved (you cant highlight multiple branches, do expand all/close all, etc).
Overall a good value for $3 and pretty useful.
benw999 about XML Inspector