That's going to be hella-tough at that price point. First, you're going to want something with discrete graphics with at least a 540M or equivalent. That with an 2nd-gen i7 and you're going to be in the 800-900 range to start.
I just got my Sager 5165 running a Nvidia 2gb 555m w/ Optimus, 8gb of 1600mhz Ram, i7-2760QM, and Mushkin 240gb Sata-III SSD just for this purpose. Ran $1,400. It was the lightest and most powerful laptop I could find with a FHD screen.
It runs SWTOR on [bLow[/b] @ 1920 x 1080 @ 49-54fps on average to give you an idea.
Rev, I don't think you will be able to play SWTOR at an acceptable level for $600. Spending that money on something you will just get annoyed with isn't worth it imo. Shame you dislike Asus, their G series is great. I still game on my G72 and never had an issues. The G74s can be bought for around $1000 at Bestbuy and newegg. If you want a gaming laptop I would say read some reviews on the G74s. Nothing on the market can match their price/performance ratio.