"bigger sound right there in the middle" can be best achieved by a sub that doesn't even have to be anywhere near the middle. Set up is important but if the sub is crossed at 80hz or below and even half way blended into your system, it's gonna sound like it's in the middle.
That's gotta be alot cheaper than a center speaker that has 12" woofers
That's gotta be alot cheaper than a center speaker that has 12" woofers