Not sure which was the better score overall, but the score when the Autobots arrive in the first movie is awe-inspiring. It gives me goosebumps whenever I watch it. It's one of my favourite movie scenes of all time!
fav score on 2nd one is..precious cargo when they drop prime body on the runway.. also i rise you fall sounds really good.. What that tune when sam sitting with bee and he says i dont blame you if you hate me..