in ws_ftp I sometimes notice that when I change a file on my local machine and then upload this I do not always get the choice of skipping that file.
Not so important on one file but when there are many files of course it makes a big difference.
I notice small (but important) changes do not prompt for overwrite. In that case I feel obliged to overwrite all files when uploading a number of files
On the options page Transfers I selected the tick box"Prompt for overwrite for same or newer files"