These systems can be quite sophisticated but you need to look at how you really listen to sound. What I realised was that there is typically a different person in each room and they want to hear different things - son wants the footy, wife listens to talkback, daughters want pop, I want to enjoy Pink Floyd - and people also change rooms. Bedroom might have a littel TV. Flooding the whole house with a single program isn't a lot of use. And people do a lot of listening from iphones etc. I found a better solution was to tailor the system to each room, so TV gets a surround sound directly connected, lounge has a plain but good stereo for music, others generally use ipods, portables etc. My mate got a bit carried away and ran expensive speaker cabling to every room, from two music centres with state of the art amps. After 5 years he hasn't hooked it up anywhere.
I made a similar mistake but saturated the house with Cat 5. None of it's used - it's all wifi. Apple TV, Airplay etc have changed the game. Do you really need HiFi in a busy kitchen?
Just my take on it - and the budget hasn't taken a hit either. After living through LP, tape, Beta, CD, Minidisc, DVD, USB, iPod and Streaming, I wouldn't commit to anything long term. (That's a way of admitting that all my good gear is somewhat obsolete in today's game, lacking optical, HDMI, Wifi and 7-channel inputs).