The build quality of casings can be very poor, and power supplies inadequate if you try to add more parts down the line.
I would stear well clear of Packard Bell as that company is notorious for cutting corners and having pi.ss poor build quality.
The best assembled and best spec'd PCs are usually those of Alienware (now owned by Dell) which are superbly made and have incredible parts, albeit at a premium price.
If you want a PC to use Office, surf the net or play a game no more taxing than Minesweeper or Solataire, then you simply cannot go wrong with a below €500 Dell, as it will have all you ever need. If, however, you want to use your PC for video and audio decoding, 3d work such as CAD, web authoring and most punishing of all, high end gaming, then even Dell's high end XPS systems are limited, and you'll really need to go for an Alienware. However, if you are that much into computers to want such a system, you'll probably try your hand at making it yourself.
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