I agree that an FTP server should have a GUI especially for the average user, this is the reason why I had stuck with Raiden but still played with ioFTPD. I just thought I would mention it as it is a Win32 FTPD; I didn't really see it as being a real contender in this community, but it is used by many. Hopefully the new version with the HTTP interface will offer more.
I haven't tried Blackmoon in a few years, but at the time I was searching for something to settle on, it didn't meet all my criteria, and I think that may have been price. I need to look into that again soon.