You are both missing one point about the "pricing" comparison. In the end you still only have a Dell/Lenovo/HP for your $500 +/- savings. I can say that not as a fanboy, but as a mere four month convert to Mac AFTER 22 years on every Microsoft platform from a 1986 Toshiba 1100+ with DOS 2.xx to a Sony Vaio SZ series Vista Business/HP dv series Vista Ultimate 64bit.
I finally gave up completely on Vista with over a year of struggling with drivers, random shutdowns, and the mere fact that two weeks after initial setup every Windows system is walking in wet cement. Four months in a total MS Exchange network/email shop, and the MacBook is still as fast as day one; no driver conflicts; close the lid and move effortlessly between office (ethernet, 22" monitor, Time Machine firewire, Lasejet 4000, external keyboard/mouse) to home (wireless N, no peripherals) and back without stumbling, shutting down, misplacing open program windows (eg - those on edge of large monitor in Vista are "off screen" when you open the smaller notebook screen), AND - using sleep mode only - no shut down/reboot cycle.
Duplicate that for your "cheaper prices" and then we can talk. You can't and since Microsoft cannot control the end-to-end experience you never will. Sure, Mac is a semi-closed system strictly controlled by the world's biggest control freaks, and as a reformed Microsoft OS user I love it.
My apologies for hijacking the thread...