I am going to upgrade my current iMac(old version with the circular base) because it is getting really old and slow. But beause of school and portablility i am starting to think of buying a MacBook or MBP. I have never owned a laptop, but have used them multiple times. I mainly browse OT, watch video, and listen to music. No gaming. Should i stick with the desktop or laptop? Will the laptop be noticibly slower to do just the things that i do?