My wife was a bio major at Smith. Ditto daughter #1 until she switched majors. Having the opportunity to take classes at UMass and greatly expand the breadth and depth of courses can be for some invaluable. The Five College Program in Culture, Health, and Science is of interest, especially for students who are considering a career in the medical field. https://www.fivecolleges.edu/chs
Smith also offers a master of science degree in biological sciences.
https://www.smith.edu/biology/graduate.php
Smith students are much more collaborative than competitive, although they can be painfully over the top with their PCness.
Daughter #2, who was also as bio major until she switched to CS, interviewed at BMC and would have applied had she not been accepted ED at Vassar.
You really can’t go wrong attending either college.