Id get the dell e1505, while im not one to reccomend dells, i have to reccomend this one. i bought it 3 days ago and its a beast.
for gaming it plays sims 2 perfect, WOW very well on medium-high with no lag, and it actually plays battlefield 2 on medium with no lag.
For everyday computing theres no contest, it cuts through it like butter with a red hot knife. multitaskes like a mother.
My specs are 2.0ghz core 2 duo, 1 gig 566mhz ram, 80gb 7200rpm HD, Creative soudblaster audigy, and ATI 256mb X1400. Total price after shipping and tax is $1082 with online coupon and the lowest warrenty possible.
I highly reccomend this dell, but toshibas are good too, if you want to spend that extra $$ then u could consider toshiba, but this right here is the best bang for your buck. Very speedy.
DFI infinity RS 482
3Gig Corsair PC 3200
AMD X2 4400+ 2.4ghz
250Gig Samsung SATA 3.0 7200rpm
250Gig Hatachi SATA 3.0 7200 rpm
60Gig Maxtor ATA 5400 rpm
2x160Gig WD SATA 7200 rpm RAID-0
ATI X850XT 256mb
Antec TruePower 430