My number two son is looking to replace his old(ish) Alienware laptop with a new gaming desktop. He is leaning toward another Alienware (although desktop this time rather than notebook). Does anyone have any recommendations that aren't in the super-ultimate-deluxe-megabucks category? His reason for going to a desktop system is for the ability to replace components as they become obsolete (primarily video cards). Some newer games will not run on the older video hardware on the noteboook.