Find files between the size of 100 MB and 200 MB. Or between 100KB and 1GB, if you wanna avoid text files, this would save clutter in the result list, and perhaps time.
Or between 1 B and 200 MB if you wanna avoid "those pesky zero length files"

What also would be handy is changing the dropdown box for B/KB/MB/GB into radio buttons, saves a click.
Perhaps this could be seen as a request, I apologize.