1.) During the import of a file with no tags, the program assumes that the tag information is in the files name with a certain pattern. It is not changeable so if you have a lot of files with not tags or you want to get the tags from a file name, you have not contol on the pattern.
2.) The is no rules based search and replace. I like version / edit information in the title field to have [] instead of ().
3.) The UI and implementation is very nice and easy to use but again it is basic. For example, I could not see how to add a field to the tag.
So because of this, I feel the cost is WAY too high for such basic editor. Thanks for the try before you buy.
Only4Beer about Tag Editor Lite