I don't own any, but I've read the early draft of Star Trek (2009) at IMSDB.com. Some of the differences (Spock time travelling on purpose to save Romulus) are fascinating.
I'd love to read the scripts for Star Trek: The Beginning, the aborted Enterprise-era Romulan war film (cancelled in favour of JJ's movie) and Star Trek: The Academy Years, Harve Bennett's version of Kirk and Spock at SFA (cancelled in favour of STVI)
If anyone's got any links (and I know both scripts are out there), they'd be much appreciated!