As a State grad and (former) Michigander, I heartily concur with this assessment. A couple other points to consider:
Lyman Briggs is unique in that you would be in a residential college within the larger MSU community, which means you have a dedicated community and resources not accesible to other pre-meds at MSU. It's much smaller too and a lot more individual attention and smaller pre-med classes. Briggs also has a great reputation among medical schools that I dare say can rival that of U of M (though they would never admit as such). I went to James Madison, the other residential college on campus for pre-law wanna-be's, and it was a much better experience compared to my U of M friends who didn't learn nearly as much as I did or had as much access to top-quality profs. The profs, btw, do not teach grad courses and are dedicated to undergraduate teaching, even though they still do gobs of academic papers/research.
Don't worry about the full ride to WS vs. MSU. Since I presume you are going to med school after undergrad regardless, all of the loans you would take would be rolled into the final loan consolidation at the end of your medical education anyway. You just tack on an extra $50-70K to your $200K loan and pay it all off then anyway. Therefore, go to the place you would be happiest and receive the best education--MSU! And if you get into the Health Scholars Program, all the better.
MSU is much more of a true "college" experience, pooh bears and tear gas notwithstanding. Don't live in Cedar Village if you don't want that crap. Holmes hall (Briggs' dorm) is just fine and quiet enough.
Though I was reluctant about going to MSU, I am very very glad I did in the end. The best times of my life have involved MSU in some way, either the people I met, the experiences I had, and the memories I retain. Not to mention an education that was practical and has served me well among my peers. I even supervise two U of M grads at my job lobbying on health care issues. Hehhehehe.
In the real world, success is determined by what you know and how you apply it, not the showy piece of paper hanging on the wall. In the future, your patients will appreciate this, I am sure.
So yeah, go to State, you won't regret it.
Good luck and GO STATE!!!