It's easy to fill a room that small with sound. The whole idea of home theater surround is the feel of being immersed by the effect. That's legit. I'm an old timer, so I tend to feel a "horsepower race" of extra channels may be inferior to fewer, but better speakers.
Right away, one difference beyond 2 speakers & maybe a subwoofer is that with a center speaker, the front L&Rs volume & importance are lessened as most vocal info comes from the front center.
C/net is high on the Aperions. I prefer to hear speakers, but the Aperions have the 30 day in home tiral period. Other speakers obviously are good. Just glancing at c/net speaker ratings. I can comment that PSB, Infinity & Klipsch are very good. The Logitechs & a few others are for being computer enhanced speakers, not home theater. Forget component makers speakers such as Onkyo, HK & Pioneer as they are just afterthoughts relative to those made by dedicated speaker specialists.
Just my 2 cents as a start.
I have a bedroom that I am converting into a home theatre room (11x10). It is obviously not very large and rather intimate. I have been looking very hard at the Aperion Audio 422 satellite system. This system is what Aperion recommends, but I wanted to get others opinions. Would it be better to go with some bookshelf speakers instead of the satellites?