The C-4's look great and sound great. Flat response and surprisingly deep bass. I was actually shocked at how low these got for being a acoustic suspension (sealed) design. The finish is top notch and they look more expensive than they are.
I have these paired with C-10 Sub, ARC Absolute In wall for the rears, and the Multimedia Center Channel to round off a 5.1 surround. Amazing sound and never disappoints.