Picking a laptop does depend on major, but also personal preference. You can use a Mac or a PC, but in the end the question is how are you going to deal with the problems you may face. Would you rather have a really nice Mac, but have to put in the extra money here and there to deal with software compatibility issue, or would you rather have a decent PC but worry about many other things such as viruses or the laptop breaking. The choice is up to you. Do research. Listen to what others have to say, but don’t be swayed by it. And pick a laptop that will last you for at least your undergrad years.