UCSD or SDSU

I got wailisted by UCSB my dream school but got accepted by both UCSD and SDSU I wanna go dorm so the other colleges by OC arent my top choices, but i dont know where to go SDSU or UCSD? I dont know what I want to major in so i cant really go off major but based of UCSD being a UC im sure its a better school? But i also heard it’s very socially dead unlike SDSU which is very social and way cheaper. Any advice?