Should I go to UCSB if I really hate partying/partyers?

It really depends upon your perspective in regards to the industry. UC Davis is near Silicon valley so there are many internships/job opportunities available along with access to many companies in the Sacramento and Bay area. I really do not think one school is better than the other, since many companies recruit from many of the UC’s. I would pick the best fit based on academics/social life and your financial situation. If you feel comfortable at a school, you have a higher chance at succeeding.