Which of these PCs should I choose?

PC arrived yesterday. Packaging was very good and PC arrived intact. Opened it up to have a look inside to make sure nothing had come loose and all I can say is that is the tidiest looking PC I have seen. All the cables were neatly tie wrapped and out the way with everything securely bolted/plugged in.

PC started straight up out the box and even had my name on the start menu. It is very quick compared my laptop. I had a quick go of Left 4 Dead 2 last night and even with a £40 Graphics Card in there it ran it at 1080p with all setting on high (no AA) averaging 40 - 50 fps which, when all you've played is console games, is very fast.

Looking forward to using this PC for other things. Well worth the money and I would recommend DinoPC if you don't mind the delivery times.