I love movie soundtracks too. James Newton Howard's score for Sixth Sense is great. I really like Alan Silvestri's Avengers theme. And Ennio Morricone had some good, bad and ugly moments, (sorry!) but when he shines, he's beyond compare - such an innovator! I like John William's main themes, but he's a little too atonal for me in most of his 'bread and butter' scoring and a lot of his textures sound the same to me.
I've always enjoyed 'that big orchestral sound'. I even try to recreate it myself in my musical muddlings on various projects. I scored a sci-fi film a few years ago that I ended up being pretty proud of if anyone's curious.
https://youtu.be/jnV7xkeKV5s. The big space battle kicks off around 1:30.
Markus