I have no experience of XBoxes or Playstations but am starting to think about one or other for DS. Don't want a Wii as have relative who lives close by who has one that he can play on. What are the merits of one over the other - do they basically do the same things? Am I inviting another screen addiction into the household or do you think I should embrace the 21st century?
In terms of machine the Xbox is slightly more advanced, however I am a Playstation fan my self as the Xbox tends to prefer mostly 3rd person action games and 1st person action games where has Playstation has more platform games and r.p.g and is generally a more well rounded computer. IMO it seems to be in between the Wii and Xbox giving you the best of both worlds. Xbox is mostly a man's console IMO the controllers are really hard to hold for smaller hands and has a lot of the old arcade games.
Really it depends on what sort of games your son likes. But I would recommend paying the extra for the less energy consuming model as this will save you loads on electric.