If your going to build your own PC then make sure to find a website that does cheap parts, dont just go to PC World and buy the parts lol its like 4 times the price. I got my self build system from a very cheap website with a very good warranty at no extra charge.. but im not sure im suposed to advertise websites here. I got mine for £500 and its quite high spec compared to getting one off the shelf at a store, so if you want a better PC for the same price or or one just as good for less then building a PC is alot better than going to a shop.... even the places that build a custom PC for you charge alot for the fact that they build it.