I switched in May of '04 before i went to college. The worst thing that I did was buy a 12" PB for "portability". At first, it was cool to have the "ultra portable" machine to take to class, but i found it never leaving my desk hooked up to a 17" LCD. At first I missed windows because i had been using it on my own computer since i was 12. The hardest thing for me to adapt was having the menu bar at the top of the screen instead of in the actual app window and not being able to click the "yellow button" to maxamize the screen to fill up the whole thing. After a few days i got used to all the differences, and found out all the good ones. Christmas of 05 i got a mac mini and it was great. Recently (at the begining of June) i got a 17" MBP. Now I can see that using a full screen window was ridiculous. I can have stickies (really useful in college) AdiumX and Firefox open and still have space. I am an accounting major and use Excel EVERY DAY so the screen size is wonderful. I can have 2 pages side by side open. I have boot camp to run some book-packaged accounting software that's windows-only, but i'm trying to find a replacement. Once you use it, you will definitely get used to it... and even see why you delayed and regret it. If i can offer one piece of advice, switch before you go to school so you can get used to it and not be stuck not knowing how to do something when it really counts. My MBP has NO PROBLEMS (knock on wood) and I will never go back. Now i have "converted" everyone in my family and am trying to get my electronics store to start carrying apple products. Switch and you will love it... do it... all the cool kids are doing it (insert peer pressure here). Things will be OK and if you have any problems you will have MR to help you out! I did it and now I love it, and when I'm home from college there are numerous Macs in my house (my 12" PB, my mini, my lil brother's mini, my mom's 12" iBook, and of course my 17" MBP)