I am curious why the price difference between the vision tec 3870 x2 ($379.99) and the Asus 3870 x2 ($ 219.99) . Can any one tell me. I am leaning toward the Asus because I have the asus P5E3 deluxe wifi-ap@n. can anyone help. Is there any technical differences that I need to be aware of to justify this price difference?