I don't know enough about PC's to build one, what component is compatible with what is too much for me to keep track of. Plus being on a budget I don't know if I'm getting a good bang for my buck. That being the case I have to rely on others to do it for me. PCSpecialist made it very easy, I selected a pre built model from a range of various price ranges. Then I was given the option to make any changes I wanted by swapping out parts. I tried saving a few quid by going for a less fancy case and was warned the one I had selected was too small for the motherboard I had. I was then shown the same options with any incompatible ones highlighted red. I could still save a bit of money knowing I wasn't making the wrong option. In the end I mainly stuck to the pre built specs and I've been happy with my purchase. I wanted something quickly, I ordered on Monday and it was ready by Thursday, I selected Sunday delivery and it was on my doorstep by 11am. I'd definitely use them again and I'd be comfortable researching things like graphics cards and maybe swapping parts out as I know these guys won't let me mess it up.