Looks like my favorite ftp client for mac is 50%-off for a day, on their website and in the mac app store (and app store purchases can be used on all your computers). If you don’t have it, I wouldn’t hesitate to recommend it. It’s a fantastic ftp client, which also supports dropbox, Amazon S3, and other services. It’ll also let you access ftp servers as if they’re disk drives. Nothing I’ve used comes close, except NcFTP at the command-line (and Transmit is using NcFTP behind the scenes). I paid double its current $17 price, and feel like I got a good deal.
If you do much transferring of media or projects to and fro via ftp, you should grab this.