I currently own a mid '09 13" based model MacBook Pro. If I want to upgrade my screen resolution, do you recommend that I purchase an additional monitor/keyboard combo or should I just sell my current MBP and re-purchase a based 21.5" iMac instead? CPU speed isn't an issue for me as my work mainly deals with web design and .net programming, but I find that my current MBP's screen resolution is a bit too low for me, so I have to hide most of the panels and it really slows down my work. And I am using it more and more like a desktop, so mobility is not an issue to me as well. Any advice is appreciated!