GFTPd 1.0 can easilly max your harddisk at larger files (local xfers spins over 100mbit) on the same drive. (I only have 1 windows drive atm) (probably you need a good client and a highend CPU as it takes a lot of CPU power to opertate that fast on a single system)
GFTPd 1.0 has a fully functional Implicit SSL function (cept FXP but that is to change, aswell as fixing other SSL/TLS method)
GFTPd 1.0's Beta GUI looks like the one in .99x the settings and user/group window has changed a lot, but unforturnally not for the better, currently it looks too much like BPFTPd (that is to change too)
GFTPd 1.0 Makes changes on the fly (didnt try speed changes yet)
GFTPd 1.0 Allows the users to delete files Razz LOL
GFTPd 1.0 supports atleast filesize up to 4 GB (yes GigaBytes) Wink
Here is a SHA1SUM of Source and Destination File (3.94GB)
http://www.guildftpd.com/