It's like an addiction, and I don't think there is ever a point when you say enough is enough... just when I think I'm all done upgrading and adding on, I find something else audio/video related that I can spend money on. I've upgraded speakers and subs so many times, I'm sure my girlfriend is wondering if I'll ever be done, but at least she likes it loud and lots of bass just like me, and she too wants a dedicated theater room one day, so that's definitely a good thing.