Premed is self explanatory and either university is great for that. The neurospsych track typically leads to grad school and you can also get to that equally well from either. Researching the right grad program will be important but good grades, GRE, undergrad research, LORs from profs are what it will mostly be about. I don’t think not being in a specific neuroscience major will effect you.
I realize it’s many yrs ago but middle brother was a similar bio: UMASS, Psych and Zoology (premed) major. Decided on NeuroPsychology and earned his PhD from Univ Texas. At the time, UNC and UMinn were the other primary contenders based on their programs.
The schools themselves are peers. You’ll be fine at either. If you like UMASS and it’s affordable, I would stay vs. transferring, especially if that requires a CC route.