I will be attending a school that has a required technology program, choices are the three models listed in the title. I am leaning more towards the macbook because they seem to have less problems than PCs. Did a little research on the Core i5 and core i7. Seems to me that there is little difference between the two unless your going for a computer science degree. Is this correct? Screen sizes, weight, webcams... not a big deal to me. Are there any major differences that set one apart from the others? Personal opinions?