Now i am no expert but a lot of folk here at PC Advisor have recounted scores of dissatisfied 'experiences' with PC world.
I think (and its my own opinio) I would go elsewhere. That is not to say that some folk have had no trouble whatsoever.... but think about aftersale support....
Again its what you want and can a certain store provide it for you?
Good luck and hope the arguments about whose go is it? stop!!
Enjoy the New PC from where ever you get it!