Welcome to Trisquel Users forums. :)Trisquel is probably most similar to Linux Mint. You can even install the cinnamon desktop: http://blog.sudobits.com/2012/07/25/how-to-install-cinnamon-desktop-on-ubuntu-12-04/
Happy hopping, just keep in mind all other distros generally don't include the -libre kernel which strips out binary blobs from the GNU/Linux kernel. :D
