Major is better because you actually end up with two degrees. It takes longer, but if the difference btw the minor and major (in terms of # of credits needed), it’s usually worth it to stay a bit longer and get the major.

Now, biomedical engineering is no joke. Seriously, try out just one major before jumping into two. Especially if you’re planning on going to med school or something like that.

The only difference that I know of is that double majoring requires more credits, which means more time. This may cause you to have to stay for 5 years. Personally, I’d go for the major/minor unless you are sure you are up for more work.