Mounting My Sub (where?)

I've had a 10 (kicker) in my truck now for about 2 years, but it has always been right behind the passenger seat which makes it uncomfortable for my passengers plus it takes away from the clean look on the inside. I am contemplating purchasing the box from *********.com (157.45) that goes right behind the driverside back seat after you take that storage bin out. Before I do this I want to get some ones opinion on what they think or if they've done the same thing. Would it sound better to mount it under the rear driver side seat with a home made box or will it be ok behind the back seat....So confused....thanks for the help!