If you aren't comfortable building a whole PC yourself then don't let people here talk you into itIt can be daunting if you aren't confident in what you are doing.
i agree with you 100% on that, but i still however wouldn't buy a PC from a highstreet retailer, would rather look online, some decent gaming rigs can be had for much less than highstreet with better specs as well if your willing to look about, some decent ones on here isn't there?