I am going to be purchasing my first Macbook and need help in deciding whether to buy a Macbook or Macbook Pro. I will be using it for the following: 1) Keynote - I give about 75 presentations per year and the presentations are usually 75 to 150 slides (5 of these slides have videos of 30 to 45 second length). The Macbook or Macbok Pro would be hooked up to a projector as the presentations are done in front of audiences of 50 to 600 people. 2) Simple web based data entry 3) Personal Use for family photos and movies 4) Web browsing and email. Also, with this purchase I will have a hybrid office for a while (2 pc's and 1 mac). What is your opinion of Office for Mac (I currently do some work with spreadsheets, publisher, powerpoint and word). I hope to get away from powerpoint and go to Keynote. I have only used pc and am not sure if the Macbook is sufficient for my needs or if I need to move up to the pro. Thank you for any help.