Quote Originally Posted by RoadKill
XP, easier to use.

2GB of RAM is already more then enough, but 4GB of RAM, thats insane.
Sorry, mate, but I'm going to have to call bs on both those comments :)

Vista is far easier to use, for someone who's not stuck in the motions of XP-orientated thinking, with intuitive searching, useful bundled programs and a help feature that actually works.

Likewise, 2GB is currently not enough ram (for a new gaming system) and I'd recommend 64bit/4GB for anyone building a system with that in mind, despite the 64 bit teething problems.

For a general use machine, though, 2GB will just cut it (I do stress just, though, as I'm sitting on 60% ram usage idle, out of 2gb, on vista)