I have been using Cute FTP for a long time now and I finally got fed up with the way it would stop transffering files from it's queue about 3/4 of the way through a multi file transfer. This really annoyed me because it always happened when I was pressed for time and I needed to update one of my websites. So I searched http://www.sourceforge.net and found FileZilla. So far I really like this program. It has a very nice UI and has worked flawlessly for me for 2 months now.