hello, i'm a so-called switcher as of a week ago with a penryn mbp. things have been going quite well so now i'm thinking of getting a (refreshed) iMac to replace my old XP machine (7 y.o. i think) as the primary desktop. however, my wife is making me wonder if i need a desktop at all since she'd rather save the cash and said the mbp can do everything we need already. we do photo & video editing, web design and just surfing...so seems like she's right...unless i'm overlooking something? i've seen the 24" iMac and it is drop dead gorgeous (although the glossy screen is a bit distracting) so it kinda gave me tech lust . but i guess i'm wondering is there really a compelling reason to get a refreshed iMac when i have a mbp? the only two reasons i can think of right now (without speculating on rumored new features): 1) the obviously bigger screen real estate to do photo/video editing 2) the speed bump from a faster processor are there other reasons to add an iMac when i already have a MBP?