OK, so I just wanted some opinions on the following scenario: I currently own a 20" aluminum iMac, 2.4GHz, 4GB RAM, 500GB hard drive. I've had it only since this August, and I LOVE it to death and have had zero problems. Now, recently I've begun to realize that I'll be needing a portable computer, i.e. a MacBook Pro, for classes and several upcoming trips. My parents have a hideous Dell Vostro something-or-other that takes at least several millennia to boot, roars like an overclocked hair dryer and belches black smoke. Now, I'm in the process of convincing them to order me a new maxed-out 15" MacBook Pro (subtotal $2,928) and they get my iMac in return. Ultimately it will be up to them whether they want to spend the money, but I'm curious if it's really that practical, since at the moment I don't have to worry about battery life. Anyone?