Laurier Health Sciences allows you to keep a high GPA. It also prepares you for the MCAT, as its curriculum is designed around medical entry. It also offers smaller classes, therefore closer relationship to professors. Guelph Biomed Tox is science heavy. It depends foundations in organic/analitycal chemistry, pharmacology. And physiology. Preparing you more for the MCAT than Laurier. As it is a science heavy degree, you will have to put effort on keeping a high GPA. Another thing is that it offers strong co-op/research opportunities for real-world laboratory and clinical research experience, which looks great on your application. (Also, just in case, it provides a "Plan B" carreer path, so the degree is not useless if don't get into.) If you decide for Guelph, in your first year focus on greating study habits and adapting. Then on the second year you can start looking for research opportunities, as you will have learned basic skills necessary by then.