Don't expect your budget system to rock the house, they are small and always have compromises built into them. These systems are great for people on shoestring budgets. Small all in one packages, cheep, fool proof, only one on button. Cheep, small sound, no upgrade path, generally only one video input and will not switch it. I mean a separate amplifier, CD, speakers etc.
Every manufacturer makes one component better than they can another.
Also a good way of deciding on what components to buy is look at magazines, surf the net and see what they rate as good and what is within your budget. Higher build quality, better sound, can switch all your video sources, a free upgrade path as new products come on line. Your Budget Don't blow it. Knowledge Know what you want, read and ask lot's. All in one or Separates.