Transformers 2, Star Trek & Terminator Salvation - which did you prefer?

And why? I know others will put other films but i have yet to see ones like the new Harry Potter and more, the above are all ones that i have seen so far and loved. The order i put are my faves. So what did you think of each, your best bits, and above all which in your opinion was the best out of the 3? Thanks, Lisa Michelle x x lol x x