I've got my eye on the Gateway 710X, but I'm waiting until my contract with AOL is finished (tentatively end of February) to buy a PC.
Also, I realize that Gateway isn't a power-user brand, but I don't really care. I've had the Gateway I'm using for a few years now, and it hasn't given me any problems. Besides, components are pretty standard nowadays, and of good quality. Building my own doesn't interest me much either, because by the time you add up Windows XP, an Intel Pentium 4 processor, the Creative Labs SoundBlaster Audigy 2, the ATI Radeon 9800 Pro, the RAM, etc, you're pretty close to, if not above, the price the Gateway costs (not to mention most cases out there I've seen are lame).