I'm trying to find some info about "what makes a good home theatre sub". More specifically I want to get a better understanding about what will sound best for movies. Is a larger sub always going to perform better? Is amplifier power indicative of performance? Is price reflective of the brand name or are there some cheaper models out there that can run with the more expensive ones. I'm not looking to spend $1000 on a sub, maybe 300-400. I want deep low bass for movies and explosions not punchy music bass for hip-hop. Is there a "all you need to know about choosing a home theatre sub" website? PS. I don't want to make my own enclosure lol.