What are the academics like at your school?
Academics at CMU can be a great experience. Professors are at the top of their professions and they genuinely care about teaching and making sure students are doing well. Plus there are so many neat classes you can take to fill your general requirements -- my favorites have been economics courses which I took on a whim and now I think econ is something I may dedicate my career too. Classes themselves are usually very small, but in classes I have been in, most students are very shy so there is not a lot of participation. Students often work together on homework and I have never seen any competition at all among students, probably because there is no class rank and hardly any professors give curved grades, or assign a fixed amount of students to get an "A" a "B" and a "C" etc.
The education at CMU is geared towards both getting a job and pure learning. Professors teach skills you need for employment, but they give you more than that as well. With only a few exceptions my professors have been phenomenal teachers, they have graded reasonably, they have prepared fun, interesting lesson plans, and they have taken the time to get to know their students, even in big classes. One economics teacher even went out to lunch with his entire class of some 400 kids in small groups.