UMASS or Delaware Engineering?

S accepted into engineering at both schools (mechanical). OOS for both schools. Visited UMASS Open House last Sunday - very thorough presentation. We visit Delaware this Saturday. Received some merit money from both schools, and UDEL provided more so net cost for UDEL is lower by about $2K/year.

It appears both schools are ranked about the same for Engineering. My question is which school might offer better post grad opportunities. Delaware has huge endowment v UMASS - like 3X larger so perhaps that might mean better alum network??

Other schools admitted are UCONN (in state) and RIT.