It all boils down to what you prefer. They're both relatively mature software packages that are being used by tons in production. Whichever you choose, you may

It all boils down to what you prefer. They're both relatively mature software packages that are being used by tons in production. Whichever you choose, you may find that http://socket.io/ http://socket.io/ saves you some time by inventing various wheels you may have needed to reinvent (for use with tornado, see the tornadio project).