You've probably heard of Explosions in the Sky, and you probably like them. About this, you are correct; they are a good band that makes good music.
Where you are wrong is when you begin to believe that you may not find something else like Explosions in the Sky.
Enter Lowercase Noises.
It's just solid instrumental music, and it will definitely remind you of Explosions in the Sky. In fact, I'm not even totally sure they're not the same band.
Here's a link to a free download of one of Lowercase Noise's projects, called "Marshall".