100% stay away from these all-in-one boxed solutions. They are selling people inferior items to cash in on the home theater craze. You might be "wow'd" for a week or so, but will soon discover your money could have been better spent with some minor research.
Grab a DVD (prefer one that is has both a AC3 and DTS soundtrack or one DVD of each) and a quality stereo CD, both of which you are very familiar with their sound and video, or ask the retailer if they have some.
Take these to your A/V reatailer or specialty shop and listen to a few components with each media; testing a few speakers as well. Heck, take some paper and a pen to make notes. You don't want to buy these items without seeing and hearing them.
Doing this research doesn't always mean sticker-shock, but it will assure you will getting far better quality and listening enjoyment for the money you do have to spend and you should find that for a tiny bit more of an investment, you will can find much better gear.
The other thing as always with all-in-ones, if one part goes out, you will also losing the rest of the setup.