i love my 14" its aging, but more than capable for the school whatnot i put it through. i had a 500 ibook for a while, but that time has come and gone. i really like the 14" more. just something about it. maybe its the palmrest (i have big hands) or the screen (i have good eyes, but long arms) something, but it works just fine for me, and portability is not an issue- attached to those big hands and long arms is a 200lb. 6' guy.
just get a good bag for it, and you wont notice the pound of difference between the 12" and the 14"
for some reason the 14" seems more like a standalone computer to me- by that i mean that the 12" always felt like it wasnt enough, almost like i should have a desktop to go home to. purely psychological, i know but still worth noting.
to sum it all up- 14" =
