I'll vote for Dell too, recently took delivery of an XPS 710 model, took a week in all from picking the parts I wanted fitted on the website to it being delivered to my door in a (very) large box. Might be a bit more expensive than some other custom-builds but you are getting a massive bullet-proof full aluminium case with an excellent cooling system inside, which is quieter than expected. Also has all the extra cables needed for adding new drives, and its all toolless (everything is designed to be as easy as possible to switch in and outany components you might add). My spec is a Core Duo 6400 with two 250GB drives in Raid 0 config, twin 7900GS in SLI cfg, 2Gig RAM and a 19" LCD monitor. Plus I have full XPS 3 yr warranty which has return-to-manufacturer cover for full duration, they will also send out a new machine if mine goes wrong, although so far its been faultless. Downsides are its not as overclockable as some PC's although CPU can be clocked through Nvidia Ntune software, memory is a bit slower than top spec stuff too, and motherboard is BTX, which apparently isn't upgradeable, although if you go large to begin with then shouldn't be any need to upgrade for a year or two. Can't fault the performance, solid high frame-rates in all newly released games I've tried (STALKER looks awesome especially when the lightning flashes at night). It was between this and an Alienware 7500, since picking the Dell I haven't been disappointed